Mr Lavrov laid the blame on the USA for failing to control the rebel groups it backs.
The main Syrian opposition group, the High Negotiations Committee, welcomed Kerry's proposal "for the grounding of Syrian air forces, which are the leading killers of Syrian civilians".
Thursday's aid was going "to people in a besieged area of rural Damascus", UN humanitarian agency spokesman Jens Laerke said.
The statement gave no details of what the operation may entail - eastern Aleppo had already been the target of intense air strikes on Thursday.
"There is no doubt in my mind that the Russians are responsible, I just don't know whose aircraft actually dropped the bomb", Dunford told the Senate Armed Services Committee. The rebels have no aircraft.
The cease-fire began September 12 and called for a seven-day reduction of violence, followed by Russian and US military coordination to fight Islamic State and the al Qaeda-linked Syria Conquest Front, two of the most extremist groups fighting in Syria.
He said water was being used as a weapon of war by all sides. Russian Federation was also accused of bombing a United Nations aid convoy last Monday that contributed to the breakdown of the fragile truce. "You don't commit a mistake for more than one hour", he said. At least 54 Red Crescent volunteers have been killed in Syria. It has repeatedly changed hands between government forces and insurgents. Hours later, US-airstrikes meant to target IS positions killed 62 Syrian regime soldiers near Deir Ezzor airport. Britain, Denmark and Australia have since acknowledged that their planes took part in the airstrike.
"So it was definitely intentional, not unintentional as they claimed", he stated.
The Syrian government controls about 40 percent of Deir el-Zour city while the Islamic State group controls the rest of the city and the surrounding province.
Aqib Talib could still face discipline over shooting
Talib has played in all four games for the undefeated Broncos this season and has three interceptions and one defensive touchdown. To this point, Talib has offered few specifics on the incident other than "I want to move on and concentrate on the season".
Syrian state media quoted army officials as urging civilians in eastern parts of the city to avoid areas where "terrorists" were operating.
"There have been tens, maybe, of convoys from different organisations around the world, coming to different areas in Syria for the last few years".
Several residents said explosions had struck with far greater force than anything that had hit the city in the past, making bigger craters and bringing entire buildings down. Assad insisted Syrian refugees who have fled the country could return within months if the United States and other foreign countries ended their support for the insurgents.
United Nations officials have often complained in the past of blocked aid deliveries.
"With respect to the air or artillery strikes, they may continue for some time depending on the field situation and the terrorists' losses", the source said. In early August, rebels from outside Aleppo city broke the siege, recapturing a corridor.
The UN had hoped to send them along the Castello Road into east Aleppo, militarily encircled since early July and where up to 250,000 people are in desperate need of life-saving supplies.
ASSAD: He denied attacking hospitals, saying, "How can I attack hospitals while I am sending vaccines, for example?" The U.N. was criticized for facilitating a similar evacuation from Homs' Old City in 2014. A second centre operated by the group was also hit.
A tweet from the UN's Office for the Co-ordination of Humanitarian Affairs for Syria later confirmed the convoy was entering the suburb.