Crimean Tatars clash with a police officer , left, in front of a local government building in Simferopol, Crimea, Ukraine, Wednesday, Feb. 26, 2014. About 20,000 Muslim Tatars who rallied in support of the interim government clashed with a smaller pro-Russian rally. Fistfights broke out between pro- and anti-Russian demonstrators in Ukraine's strategic Crimea region on Wednesday as Russian President Vladimir Putin ordered massive military exercises just across the border. (AP PhotoAndrew Lubimov)