More confusion over who is doing what in Syria.

Only two months after Russia’s entry into the air war over Syria, we’ve already seen close calls between American and Russian jets, a Turkish shoot down of a Russian bomber that strayed into Ankara’s airspace, and now accusations over which country apparently bombed a Syrian army base. Early Monday morning, Damascus complained to the United Nations that U.S. jets hit one of its bases in eastern Syria, killing three soldiers and tearing up an ammo depot. But as FP’s Paul McLeary reports, American officials say it ain’t so. One American military official said the Pentagon is “certain it was the Russians,” but has yet to produce any hard evidence of its certainty. So far, Moscow has been quiet on the issue