A Russian serviceman directs Russian tanks after their arrival in Crimea in the settlement of Gvardeiskoye near the Crimean city of Simferopol March 31, 2014. Russia is withdrawing a motorized infantry battalion from a region near Ukraine's eastern border, the Russian Defence Ministry was quoted as saying by state news agencies on Monday. [Photo/Agencies]

A Russian serviceman stands near Ukrainian tanks on freight cars before the departure from Crimea to other regions of Ukraine in the settlement of Gvardeiskoye near the Crimean city of Simferopol March 31, 2014. [Photo/Agencies]