WASHINGTON - Russia's recent military buildup in Syria has perplexed the Obama administration and left it in a quandary as to how to respond, complicating Washington's efforts to both combat Islamic State extremists and assist moderate rebels trying to oust Syrian President Bashar Assad.
Associated Press: Russian moves in Syria flummox US
Russia's Foreign Minister Sergei Lavrov looks on as he meets with representatives of the Syrian opposition in Moscow on Aug. 31, 2015.
