U.S. Secretary of State John Kerry visited Moscow on March 24 to meet with Russian President Vladimir Putin and Foreign Minister Sergei Lavrov. Despite some awkward teasing during Kerry's reception, one imagines that the conversation on Syria and Ukraine took on a much more serious tone behind closed doors. After all, Russia's drawdown in Syria and its efforts to cobble together a power-sharing agreement in Damascus are designed to open negotiations with Washington and Europe on matters of greater Russian interest, such as sanctions, Ukraine and NATO's military buildup in the former Soviet periphery. At the same time, Moscow is trying to gain leverage in another, much less prominent, theater of conflict. ...