Updated at 3:02 p.m. ET: GAZA CITY, Gaza Strip -- The leader of Hamas said Monday it was up to Israel to end the new conflict it had started, adding that a "land war" would cost Israeli Prime Minister Benjamin Netanyahu the election.

"[Netanyahu] can do it, but he knows that it will not be a picnic and that it could be his political death and cost him the elections," Khaled Meshaal, exiled leader of Hamas, told a news conference in Cairo.

"Whoever started the war must end it," Meshaal said, adding that Netanyahu, who faces an election in January, had asked for a truce, an assertion a senior Israeli official described as untrue.

For its part, Israel said that while it was prepared to step up its offensive by sending in troops, it preferred a diplomatic solution that would end Palestinian rocket fire.

Israeli Vice Prime Minister Moshe Yaalon has said that "if there is quiet in the south and no rockets and missiles are fired at Israel's citizens, nor terrorist attacks engineered from the Gaza Strip, we will not attack."

According to a poll by Israel's Haaretz newspaper, 84 percent of Israelis supported the current Gaza assault, but only 30 percent wanted an invasion, while 19 percent wanted their government to work on securing a truce soon.

Acting as a mediator, Egypt said Monday that a deal for a truce to end the fighting could be close, as Israel bombed dozens of suspected guerrilla sites in the densely populated Hamas-ruled Gaza Strip in its campaign to quell militant rocket fire menacing nearly half of Israel's population.

Twelve Palestinian civilians and four fighters were killed in the sixth day of fighting, local officials said, raising the number of Palestinian dead to 101, the Hamas-run Health Ministry told Reuters, listing 24 children among them. Hospital officials in Gaza said more than half of those killed were non-combatants. Three Israeli civilians died on Thursday in a rocket strike and dozens others have been wounded.

Slideshow: Israel, Gaza violence escalates

Ammar Awad / Reuters

Two sides exchange deadly airstrikes, rocket attacks.

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Among the targets struck in Gaza City Monday was the Al Shorouq media building, which Israeli warplanes hit for the second straight day. The attack targeted a second-floor apartment used by a leading Islamic Jihad militant. He was killed and four others were injured, NBC News' Ayman Mohyeldin reported.

The Israeli military said it targeted only the floor used by the militants. “The senior [Islamic Jihad] cadre was operating in a media building. They weren’t there to be interviewed. They were using reporters as human shields,” it said on Twitter.

But the lower floors of the building caught fire, trapping journalists on the higher levels. Firefighters were trying to put out the blaze and get the journalists out of the building. The Hamas TV station is located on the top floor.

Family mourned
Thousands turned out on Gaza's streets Monday to mourn four children and five women, who were among the 11 people killed in an Israeli strike that flattened a three-story home the previous day.

The bodies were wrapped in Palestinian and Hamas flags. Echoes of explosions mixed with cries of grief and defiant chants of "God is greatest."

Israel said it was investigating the strike that brought the home crashing down on the al-Dalu family, where the dead spanned four generations. Some Israeli newspapers said the wrong house may have been mistakenly targeted.

Since Wednesday, 877 rockets have been fired from Gaza toward Israel, the Israeli military said Monday. Of those, 570 rockets have struck Israel while the country’s air defense system has intercepted 307, according to the military. Forty-five rockets were fired at southern Israel on Monday, causing no casualties, police said.

Israel's decision to step up targeted attacks on leaders in Gaza on Sunday marked a new and risky phase of the operation, given the likelihood of civilian casualties in the crowded territory of 1.6 million Palestinians.

Negotiations inch forward
International efforts to wrest a cease-fire from the two sides has intensified despite the escalated hostilities. The failure to end the fighting could touch off an Israeli ground invasion, for which thousands of soldiers, backed by tanks and armored vehicles, have already been mobilized and dispatched to Gaza's border.

Leading cease-fire mediation efforts is Egypt, which borders both Israel and Gaza and whose Islamist-rooted government has been hosting leaders of Hamas.

“I strongly urge the parties to cooperate with all efforts led by Egypt to reach an immediate cease-fire," U.N. Secretary-General Ban Ki-moon said before leaving for Egypt. He visits Israel on Tuesday.

European Union governments also said they supported Egyptian efforts to mediate.

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On Sunday, President Barack Obama said it would be "preferable" to avoid a move into Gaza, but that Israel had a right to self-defense and no country would tolerate missiles raining down on its citizens.

Egyptian Foreign Minister Mohamed Kamel Amr, Arab League chief Nabil Elaraby and several other Arab foreign ministers will visit Gaza on Tuesday to show solidarity with Palestinians. Turkish Foreign Minister Ahmet Davutoglu will accompany them, officials said.

Mohammed Saber / EPA

A Palestinian woman inspects the rubble of her destroyed house after an Israeli airstrike in the eastern part of Gaza City on Monday.

Forces gather
Israel launched the current offensive Wednesday after months of intensifying rocket fire from the Gaza Strip, which continued despite the strikes.

Israeli tanks, artillery and infantry have massed in field encampments along the sandy, fenced-off border and military convoys moved on roads in the area. Israel has also authorized the call-up of 75,000 military reservists, so far mobilizing around half that number.

Overnight, aircraft targeted about 80 militant sites, including underground rocket-launching sites, smuggling tunnels and training bases, as well as command posts and weapons storage facilities located in buildings owned by militant commanders, the military said Monday in a release.  

Aircraft and gunboats joined forces to attack police headquarters, and rocket squads were struck as they prepared to fire, the release said.

In all, more than 1,000 Gaza targets have been struck since the operation began.

Some Hamas rockets reached as far as Tel Aviv, Israel's commercial capital, but were shot down by the country's air defense system.

As a precaution against the rocket interceptions endangering nearby Ben-Gurion International Airport, civil aviation authorities said on Monday new flight paths were being used.

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Israel's declared goal is to deplete Gaza arsenals and force Hamas to stop rocket fire that has bedeviled Israeli border towns for years. The rockets now have greater range, putting Tel Aviv and Jerusalem within their reach -- a strategic weapon for Gaza's otherwise massively outgunned guerrillas.

Lior Mizrahi / Getty Images

Israeli soldiers prepare their weapons in a deployment area near the Gaza border on Monday.

NBC News' Ayman Mohyeldin, The Associated Press and Reuters contributed to this report.

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Reuters

Debris lie near a building damaged by a jet's missile in Aleppo, Syria, on Oct. 23.

Syrian government forces killed at least 20 people on Tuesday when they shelled a bakery in a neighborhood under rebel control in the contested northern city of Aleppo, opposition activists said.

The dead included women and children, they said. Video footage, which could not be immediately verified, showed decapitated bodies amid scattered bread loaves.

Two shells hit the bakery, located in the eastern Hananu neighborhood, in the early afternoon, said Majd Nour, an opposition campaigner in Aleppo. Free Syrian Army fighters were guarding it at the time, he said.

Aleppo is Syria's biggest city and commercial hub. Rebels trying to overthrow President Bashar al-Assad launched an offensive to capture it last month and street fighting has taken place on a daily basis since then.

Shell lands in Turkey
Earlier in the day an anti-aircraft shell fired from Syria hit a health center across the border in Turkey's Hatay province but there were no immediate reports of injuries, CNN Turk television reported.

Turkey has bolstered its military presence along its 560-mile border with Syria and has been responding to gunfire and mortar shells hitting its territory from fighting between Syrian rebels and government forces.

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The district governor's office said it had no immediate information on the incident.

Tension between the two neighbors, once close allies, is at its highest since Ankara turned against Assad last year over his violent crackdown on anti-government protests.

International mediator Lakhdar Brahimi, who ended a four-day visit to Damascus on Tuesday, has pushed for a ceasefire to mark the Islamic holiday of Eid al-Adha, which starts on Friday, hoping for a respite from daily death tolls of around 150.

But he did not win a public commitment to a truce in his talks with Assad, and the rebels say there is little point to a ceasefire that cannot be monitored or enforced.

Report: Several killed in Damascus car bomb ahead of Syria truce talks

The Turkish military has fired on Syria 87 times, killing 12 Syrian soldiers and destroying several tanks in retaliation for Syrian shells and mortar bombs landing inside Turkey, the Turkish newspaper Milliyet reported on Saturday.

In Syria, fighting raged on Tuesday as rebels battled to seize an army base close to the main north-south highway. The rebels say its capture would be a big step toward creating a "safe zone" allowing them to focus on Assad's southern strongholds.

Battle for Wadi al-Deif
Assad is fighting an insurgency that grew out of protests 19 months ago and has escalated into a civil war in which 30,000 people have been killed. His overstretched army has lost swathes of territory and relies on air power to keep rebels at bay.

For two weeks Assad’s forces have been tied down, battling rebels in Wadi al-Deif, east of the town of Maarat al-Numan. If the town fell to rebels, who already control northern border crossings to Turkey, Assad would be dependent on a single land route - from the Mediterranean port of Latakia - to supply his forces fighting to win back Aleppo.

"The battle started 11 days ago. At first we sent small groups to liberate (the base) and we were surprised by the resistance the regime forces showed," said Lieutenant-Colonel Khaled Hmood, a former army officer who defected to fight Assad.

Slideshow: Syria uprising

Fabio Bucciarelli / AFP - Getty Images

A look back at the violence that has overtaken the country

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"The regime is fighting fiercely. It seems that it doesn't care if it loses thousands of troops in order to keep its control over the compound."

Syrian opposition skeptical of 'feeble' ceasefire plan

Hmood said he believed around 400 soldiers were defending Wadi al-Deif - a group of barracks barely 500 yards from the Damascus-Aleppo road and backed by air power that Assad has deployed against rebels and residents of a nearby town.

The base may also be an important fuel depot, holding at least five million liters of kerosene in five underground bunkers, according to Hmood.

Anti-Assad activists say 40 civilians were killed in air strikes on the town last Thursday in one of the most intense air offensives of the Syrian conflict.

But its efforts to send military reinforcements have been repulsed by the besieging rebels. The last attempt on Sunday ended when four tanks were destroyed and the remnants of an army column had to pull back. "We have noticed that the best strategy is to hit its supply line. We have been harming the regime a lot by hitting the reinforcements it is sending."

The rebels still face challenges to take the base. Although they have acquired increasingly deadly arms, including artillery and anti-aircraft weapons, they have regularly complained that they have only limited supplies to keep up the fight.

Reuters contributed to this report.

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Reuters

Turkish soldiers take strategic position at the Akcakale border gate in southern Sanliurfa province on Sunday.

News Analysis

SANLIURFA, Turkey – Monday was another day of cross-border violence and rising tension between Syria and Turkey.

It was also a day when Gov. Mitt Romney pledged that, if elected president, he’d change the course of events here.

Among other things, he wants to green-light heavy weapons to the Syrian rebels “who share our values” in order to “defeat the tanks, helicopters and fighter jets” of the Bashar Assad regime.

For its part, the Obama administration says it has refrained from supplying the rebels with weapons out of concern that they could end up in terrorist hands. 

Others say escalating the conflict with more weapons isn’t necessarily good news for ordinary Syrians who are struggling to live along the 600-mile border – or for the U.S., given the potential for a larger regional conflagration.

Romney: Risk of conflict higher in Mideast after Obama policies

On the border – but not safe
Mahmoud Soukman is a truck driver who transports goods between Syria and Turkey. Three weeks ago he left his truck and fled with his wife, 9-month-old daughter and the clothes on their backs, moving in with his mother and siblings on a small farm just inside Turkey.

But they don’t feel safe, on either side of the border.

Mortars and shells explode ominously, and often in the distance, as Syrian rebels and government troops fight over strategic swaths of Northern Syria in the ongoing civil war. And one mortar did land near the farm house. 

Meanwhile, the tit-for-tat border skirmishes between Turkey and Syria have already become routine. The Syrian Army landed a mortar again on Monday about 100 yards inside Turkey, with no casualties; and the Turks have been returning artillery fire at imprecise targets inside Syria.

Syrian President Assad’s regime offered a weak apology for the deaths of five Turkish civilians, killed last week by an allegedly errant shell. But Turkish government officials have become increasingly bellicose. On Monday, Prime Minister Recep Tayyip Erdogan warned Turks to prepare for war, if necessary. 

Also on Monday, Turkish President Abdullah Gul said the "worst-case scenarios" were now playing out in Syria and Turkey would do everything necessary to protect itself.

"The worst-case scenarios are taking place right now in Syria ... Our government is in constant consultation with the Turkish military. Whatever is needed is being done immediately as you see, and it will continue to be done," Gul said.

"There will be a change, a transition sooner or later ... It is a must for the international community to take effective action before Syria turns into a bigger wreck and further blood is shed, that is our main wish," he told reporters in Ankara.

Near Soukman’s farm, we saw Turkish troops and armored personnel carriers beefing up the border, building sand berms that gave the ordinarily bucolic setting a front-line feel.

Turkey fires on Syria after another Syrian shell hits its terrority

‘Very volatile’
Some Middle East analysts see a potential tinderbox. “The situation is very volatile, very dangerous and has the potential to escalate into all-out war,” warned Professor Fawaz Gerges from the London School of Economics. 

What could happen if the rebels get the shoulder-held rocket launchers and anti-aircraft weapons they want?

One likely scenario, say some Middle East experts, is that the Kremlin will loosen its own under-reported restrictions and sell the Syrian government – which Russia considers a client state – the high-tech weapons that Assad has been clamoring for. 

If that were to happen, some say it has the potential to unleash an arms race – and an all-out war – on Turkey’s doorstep.

In that case, Gerges believes, just one mistake, one miscalculation, could trigger a regional war - or worse.

“If Turkey, a NATO member, is fed up and invades Syria, NATO would have no choice but to intervene in Syria. And you can bet that Iran would become involved, and this could quickly turn into a region-wide conflict between Turkey, NATO, Saudi Arabia and Qatar on the one hand, and Iran, Iraq, Hezbollah and Syria on the other.”

Luckily, this nightmare scenario can be avoided. In fact, both Russia and NATO (read: the U.S.) are using their considerable influence over Syria and Turkey, respectively, to keep tempers in check.

But Turkey is already bristling with almost 100,000 hungry Syrian refugees in camps on its border. And Assad is well aware that Turkey is largely spearheading the rebels’ fight against his regime, supplying their weapons and hosting the military wing of the opposition. 

If a Syrian warplane were taken down by well-armed rebels and crashed into a Turkish village on the border, killing dozens, the incident could be the match that ignites a conflagration. 

“You have the potential not only for a region-wide war, but also for international conflict as well,” said Gerges.

Slideshow: Behind Syrian rebel lines

Machine guns operated by motorcycle brakes? Get a glimpse at the rebels fighting against Assad's forces in Syria's mountainous Jabal al-Zawiya area.

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Who are the Syrian rebels?

Political calculation
President Barack Obama has maintained that arming the rebels is a red line beyond which chaos could unfold, leaving the risk of an over-militarized Syria with a power vacuum – a kind of Libya on steroids.

There is also the added danger of “rogue rebels” – both al-Qaida and affiliated militants have already joined the rebels’ ranks – getting their hands on sophisticated weapons and turning them on us.

At least in his public statements, Romney doesn’t appear too concerned about either happening. Instead, he seems more focused on a victory by freedom-fighters over an evil Syrian regime. His camp says that more powerful and deadly weapons will be a game changer.  

From his precarious perch overlooking the border, Soukman, the refugee truck-driver, sees only dark days ahead.

“There’s no food or water in our village. You can die from hunger,” he said. “If the fighting doesn’t calm down, maybe we’ll be here for years.”

Jim Maceda is an NBC News Correspondent based in London currently on assignment on the Turkish-Syrian border. Reuters contributed to this report.

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Updated at 12:00 p.m. ET: Russia rebuffed President Barack Obama's threat of unilateral action against Syria Tuesday, as officials said 2,500 refugees fled across the border into Turkey in just 24 hours – one of the highest daily refugee flows of recent weeks.

Russian Foreign Minister Sergei Lavrov, speaking after meeting China's top diplomat, said Moscow and Beijing were committed to "the need to strictly adhere to the norms of international law ... and not to allow their violation".

Obama draws 'red line' for Syria on chemical and biological weapons

Obama on Monday threatened "enormous consequences" if his Syrian counterpart used chemical or biological arms or even moved them in a menacing way.

The president used some of his strongest language yet to warn Assad not to use chemical or biological weapons – after Syria acknowledged for the first time that it had such weapons and could use them if foreign countries attacked it.

"We have been very clear to the Assad regime, but also to other players on the ground, that a red line for us is (if) we start seeing a whole bunch of chemical weapons moving around or being utilized," he said. "That would change my calculus."

Syria 'ready to discuss' Assad's resignation, deputy PM says

"We cannot have a situation where chemical or biological weapons are falling into the hands of the wrong people," Obama said, perhaps referring to Lebanon's Shiite Hezbollah group, an Iranian-backed ally of Assad, or to Islamist militants.

Turkey's foreign minister has warned it can accommodate no more than 100,000 refugees and that the United Nations may need to create a "safe zone" within Syria to shelter any beyond that number.

Slideshow: Syria uprising

Goran Tomasevic / Reuters

After months of protests and violent crackdowns, a look back at the violence that has overtaken the country.

Launch slideshow

Thousands of refugees
A Turkish official told Reuters on Tuesday that about 2,500 people fleeing violence in Syria had entered Turkey in the preceding 24 hours, most of them entering the southeastern Turkish province of Hatay.

Turkish journalist Mahir Zeynalov reported on Twitter that four Syrian colonels and two captains crossed the border early Wednesday.

PhotoBlog: Clashes over Syrian conflict in Lebanon leave ten dead

Turkey is now sheltering close to 70,000 Syrian refugees and is struggling to accommodate the influx, which rose after a bomb attack near the border killed eight, spreading panic.

In Lebanon, street battles between Sunnis and Alawites continued for a second night running, fueled by conflicting loyalties in the conflict across the border. The BBC reported that seven were killed and more than 70 wounded in the country's second-largest city, Tripoli.

Syrian President Bashar Assad, an Alawite, is battling largely Sunni opposition fighters. Lebanese Prime Minister Najib Mikati, himself a Sunni, appealed to both sides to end the "absurd battle" in Tripoli.

In Syria itself, the army deployed tanks on a ring road surrounding Damascus on Wednesday and shelled southern neighborhoods where rebels operate, in the heaviest bombardment on the capital since the army reasserted control last month, residents said.

At least eight people were killed in the shelling, which was accompanied by an aerial bombardment, on the Kfar Souseh, Daraya, Qadam and Nahr Aisheh neighborhoods, they told Reuters.

Regional news channel Al-Jazeera reported that at least 24 people were killed across the country on Tuesday, among them women and children in Aleppo - the city over which the rebel Free Syrian Army (FSA) claims two-thirds control, and where a Japanese journalist was killed on Monday.

Activists: Japanese journalist killed in Aleppo

"We now control more than 60 per cent of the city of Aleppo, and each day we take control of new districts," said Abdel Jabbar al-Okaidi, a colonel with the FSA. He went on to list some 30 districts which he claimed were under FSA control, including about half of the embattled neighborhood of Salaheddin.

But a security source in Damascus rejected the claims, according to the AFP news agency, calling them "completely false".

Likened to Iraq invasion
Syrian soldiers killed a journalist sympathetic to the rebels during a raid in Damascus on Wednesday. Mosaab al-Odaallah, who worked for the state-run Tishreen newspaper, was shot at point-blank range at his home by troops conducting house-to-house raids in the southern Nahr Eisha district of the capital, opposition activists said.

Massoud Akko, head of the public freedoms committee at the underground Syrian Journalists Association, said Odaallah's death brought to 54 the number of Syrian journalists, bloggers and writers killed by security forces during the uprising.

"Most have been killed with shots to the head. The regime appears to have adopted a systematic policy of killing journalists and social media activists," Akko told Reuters by telephone from Berlin.

Earlier, Syria's deputy Prime Minister Qadri Jamil said Obama's talk of action against Syria was media fodder.

Speaking after the news conference held by Russia's Lavrov, Jamil said the West was seeking an excuse to intervene, likening the focus on Syria's chemical weapons with the run-up to the 2003 invasion of Iraq by U.S.-led forces and the focus on what proved to be groundless suspicions that Saddam Hussein was concealing weapons of mass destruction.

"Direct military intervention in Syria is impossible because whoever thinks about it ... is heading towards a confrontation wider than Syria's borders," he told a news conference in Damascus.

Meanwhile, the Los Angeles Times reported the concerns of Christians, who make up about 10 per cent of Syria's population. It said Christians fleeing the fighting have detected an increasingly radicalized Islamist strain among the rebels that makes them fear for their future.

Reuters contributed to this report.

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ANTAKYA, Turkey – It’s mid-afternoon, and in the basement of a non-descript residential building in a small town on the Turkish side of the border with Syria, volunteers are busy packing parcels of medicines and first-aid backpacks. The shipments today – as they have been every day – are destined for field hospitals on the battlefields inside Syria.

In this small makeshift warehouse, dimly lit air-conditioned rooms keep medicines cool. IV drips, resuscitator kits, bandages, gauzes, suture kits, pain medications and sterile operating kits are stacked on shelves from floor to ceiling. Every bag is stuffed. Not an inch is spared.

Workers here know every item taken inside Syria can save a life, or at least, help ease the pain of someone suffering.

The warehouse in Turkey is just one point in a vast global network aimed at helping the people of Syria caught in the crossfires of the ongoing conflict there. It is made up of doctors and nurses from America, working for an organization registered in France, buying medicine in Turkey, with funds from Arab countries and elsewhere in the world.

On the ground, the network is run by doctors, nurses and activists who help acquire the medicines locally and ferry them across the rugged border to the Syrian frontlines where people need them the most. Wealthy individuals, families and communities from around the region and the world have combined forces to help pay for the supplies.

While politicians and diplomats wrestle, argue, fight and disagree about what to do to end the violence in Syria, this is what ordinary men and women from around the world are doing to try and save lives.

Zohra Bensemra / Reuters

People and members of the Free Syrian Army carry an injured woman on a stretcher at an unofficial border crossing with Turkey in the northern Syrian province of Idlib on Monday.

Taking a toll on Turkey
If the frontlines of the war are deep in Syrian soil, the rear lines extend deep into neighboring Turkey. 

For a country that has in recent times enjoyed an economic boom, coupled with new diplomatic clout in the region, Syria’s conflict is taking a toll on Turkey and some of Syria’s problems are spilling over into border towns and cities here.

Makeshift care centers dot the Turkish-Syrian border. In town after town, private houses or in some case whole buildings are being converted to patient centers where the wounded and injured from Syria are brought for care, help and sometimes shelter.

The Turkish government says they have taken in over 46,000 Syrian refugees since the start of the conflict. Many of them are housed in refugee camps along the border.

But many of the wounded and injured are brought to Turkish hospitals where they are treated and discharged. Once discharged, few have the proper resources to secure shelters or even the proper post-operative care. As a result, many are in desperate need of follow-up care.

Care houses run by Syrian doctors have sprung up to take in patients in desperate need of help. Many were amputees who lost limbs in battle, or were injured by the fighting – only to lose their limbs while being transported. They say their limbs could have been saved had proper medical care been readily available inside Syria. Instead, due to the long journey from Syrian cities – even though they are just dozens of miles across the Turkish border – many began to suffer infections that were incurable once they arrived on Turkish soil.

Over time, the houses have quickly filled up and the centers have become increasingly vital in providing critical care for some of the patients. Today, along this one stretch of the Turkey-Syria border, there are about half a dozen care centers housing between a dozen to 100 patients in each one, volunteer doctors say.

The average cost to run one of these centers is approximately $60,000 per month. Doctors are renting private residences in some cases and equipping them with basic supplies and equipment. They are not meant to operate as hospitals, but they are clearly serving life-saving functions at times.

'They need everything'
Many of those at the center we visited refused to give their names or even agree to be filmed for our video story. Patients regularly complained that although the care centers were providing important medical assistance, they were too ill-equipped, under-funded and poorly staffed to care for a steady stream of patients.

One patient from Aleppo with severe shrapnel wounds to his leg, agreed to speak with us but refused to give his name. He complained the facility was inadequately staffed.

Slideshow: Syria uprising

Stringer / Reuters

After months of protests and violent crackdowns, a look back at the violence that has overtaken the country.

Launch slideshow

"The Syrian National Council and the opposition groups are collecting millions of dollars from around the world for the revolution and they are just taking the money. Come look at the people here and see how we are being treated and you will see there is no money coming here,” he said.

Volunteers vehemently deny such charges. Instead, they say all of their funds are from private donations from individuals.  

Mark Cameron, a Canadian volunteer medical worker who was visiting one of the centers for the first time with the aim of returning to the West to solicit more funds, was shocked at what he saw.

"They need everything. The situation is desperate. I've been in some troubled spots all over the world, most recently, Cambodia, and as serious as it is there, this need here is immediate. It's today, it's this second,” said Cameron. “They don’t have antibiotics. They did some surgeries here yesterday that blew my mind without pain control because they just don't have it. It simply doesn't exist and the surgeries have to occur."

Cameron stressed that the doctors’ mission is apolitical. 

“This has nothing to do with religion, nothing to do with politics. This is a medical problem at the moment. We're medical professionals and were here to treat the medical problem.”

The volunteer doctors are mostly Syrians who are either living abroad or who escaped the fighting in their country. They are not allowed to practice medicine in Turkey because the care centers fall outside of the official Turkish health care system. But the facilities can help patients with post-operative care or serve as nursing homes for those with no places to go.

Supplies sneak across the border
Back at the warehouse, the medical supplies have been loaded on to a van. The van makes its way to the border under the watchful eye of the Turkish military, which sees the drop off in plain sight.

The military has turned a blind eye to much of the smuggling of medicines taking place along its border. It’s a sensitive issue for the Turkish government, which doesn’t want the border area to become lawless but is increasingly becoming porous for supplies, fighters and even weapons.

In broad daylight, we accompanied the volunteers as they coordinated with their counterparts on the Syrian side of the meeting point.  Along a stretch of the border that is marked by layers of barbed wire, a few cars have already pulled up. Our van approaches, and within minutes the bags and boxes are dropped off, pushed across an opening in the razor wire and loaded in the back of smaller beaten down cars heading to different cities across the battlefield.

The entire drop-off lasted less than 10 minutes. Then it was back to the warehouse for the volunteers in Turkey and off to the frontlines for the activists in Syria. Both sides are in a race against time and acutely aware that with each successful mission like this one, there is another chance to save a life in a conflict that has already taken so many.

ANTAKYA, Turkey – The conflict in Syria continues to escalate as President Bashar al-Assad’s forces and rebels fiercely battle over the country's biggest city of Aleppo.

NBC News’ Ayman Mohyeldin has been in and out of Syria several times throughout the ongoing conflict. He is currently in Antakya, Turkey, near the Syrian border.

He answered reader questions about the conflict earlier Tuesday. Replay the informative chat below. 

Syria's embattled Assad appears on TV for first time in two weeks