Obama: Collect all the forces on the ground in Syria is difficult

US President Barack Obama said on Sunday that talks with Russia would be the way to reach any agreement to halt combat operations in Syria, pointing out that the negotiations difficult and there are still serious differences between Washington and Moscow.

He said Obama, who is in China to participate in the G - 20 summit, to gather all the forces on the ground in Syria difficult.

He continued , saying , "We're interested in for a long time to find a way to reduce violence and improve the humanitarian aid Kpoadr the political situation in Syria."

He also said he had not yet reached an agreement on the cessation of hostilities in Syria.

For his part, the US State Department official said, on the sidelines of the Group of Twenty summit in east China 's Hangzhou City, the United States is on the verge of reaching an agreement with Russia on Syria, adding that it may be announced agreement later in the