Government forces open a Russian-backed campaign against Eastern Ghouta with more than 260 rockets and intense air raids.
The U.N.'s humanitarian affairs office says in a Twitter posting on Monday that the convoy of trucks is carrying health and nutrition supplies, along with food for 27,500 people in need.
More than one-third of Eastern Ghouta has fallen under government control since Damascus launched a ground offensive against the opposition enclave in recent weeks.
Airstrikes by Russian Federation and a US -led coalition killed civilians in Syria on a large scale a year ago, while the Assad government carried out unlawful chemical weapon attacks in rebel-held Eastern Ghouta, U.N. war crimes investigators said Tuesday.
"President Trump and President al-Sisi agreed to work together on ending the humanitarian crisis in Syria and achieving Arab unity and security in the region", the White House statement said. Of the 14, four were partially offloaded, he said.
The misery in a besieged rebel suburb of Damascus caused by the Syrian government's relentless push to crush the area is indicative of a "new phase of horror" in Syria's war, a top United Nations official has said.
Speaking on Tuesday, a day after a rare humanitarian mission to eastern Ghouta that was cut short because of the shelling, he says schools have stopped and some children have not seen daylight for 15 days.
On Monday, an global convoy of humanitarian aid trucks cut short its mission to deliver supplies in eastern Ghouta after government forces continued their aerial bombardment and ground assault.More news: 23 andMe can now offer prescription-free cancer risk tests
Iyad Abdelaziz, a member of the Douma Local Council, says nine aid trucks had to leave the area after government shelling and airstrikes intensified in the evening.
Heavy air strikes and clashes shook the Syrian rebel enclave of Eastern Ghouta, as France and Britain called for an emergency UN Security Council meeting on the escalating violence. It accused the government of using "poison gas".
UOSSM, the Union of Medical Care and Relief Organizations, said victims in eastern Ghouta reported an attack on Monday that left victims coughing and red-eyed; there were no fatalities, but the symptoms were consistent with chlorine gas, the group said. The reports could not be independently confirmed, and Russian Federation used its Security Council veto to freeze the work of a United Nations body investigating such reports earlier this year.
The Syrian region of Ghouta is experiencing another round of bombardment ahead of a pro-government military offensive.
Russian Federation has called for five-hour daily ceasefires each day in eastern Ghouta since early last week, but the Syrian government offensive to recapture the enclave has continued.
He said that "nearly half of the food carried on the convoy" could not be delivered.
Three kilometers of opposition territory now separate government forces attacking from the eastern and western edges of East Ghouta.