The United States and Russia on Sunday tried to finalize a ceasefire deal for Syria, a second this year after a first collapsed, but U.S. President Barack Obama said “grave differences” remained and fighting on the ground continued. A truce brokered by the Cold War foes in February broke down and peace talks between the Syrian government and opposition ended earlier this year with both sides trading the blame. Fighting in the five-year conflict has since escalated in many areas, especially around the embattled city of Aleppo in the north.
http://www.reuters.com/article/us-mideast-crisis-syria-usa-obama-idUSKCN11A060
