A woman holds a placard displaying a caricature of Russian President Vladimir Putin during a rally against Russia on Kiev’s Independence square on March 2, 2014. Pro-Russian forces tightened their grip on Crimea on Saturday as the Kremlin vowed to help restore calm on the restive Ukrainian peninsula and Washington warned of “costs” to Moscow should it order in troops. AFP PHOTO/BULENT KILICBULENT KILIC/AFP/Getty Images