Policemen restrain pro-Russian protesters as Petro Poroshenko, a Ukrainian parliament lawmaker and main businessman supporting the pro-EU protest movement in Kiev, tries to enter a taxi in Simferopol on February 28, 2014. Poroshenko arrived in Crimea to meet with local government officials and negotiate a peaceful settlement to the crisis gripping the Black Sea peninsula. AFP PHOTO/ GENYA SAVILOV

Police officers block pro-Russian protesters as they escort Petro Poroshenko (C), Ukrainian parliament lawmaker and businessman supporting the pro-EU protest movement in Kiev, in the center of Simferopol on February 28, 2014. Poroshenko arrived in Crimea to meet with local government officials and negotiate a peaceful settlement to the crisis gripping the Black Sea peninsula. AFP PHOTO/ GENYA SAVILOV

Police officers block pro-Russian protesters as they escort Petro Poroshenko (C), Ukrainian parliament lawmaker and businessman supporting the pro-EU protest movement in Kiev, in the center of Simferopol on February 28, 2014. Poroshenko arrived in Crimea to meet with local government officials and negotiate a peaceful settlement to the crisis gripping the Black Sea peninsula. AFP PHOTO/ GENYA SAVILOV

Police officers block pro-Russian protesters as Petro Poroshenko (sitting in taxi), Ukrainian parliament lawmaker and businessman supporting the pro-EU protest movement in Kiev, leaves in a taxi in the center of Simferopol on February 28, 2014. Poroshenko arrived in Crimea to meet with local government officials and negotiate a peaceful settlement to the crisis gripping the Black Sea peninsula. AFP PHOTO/ GENYA SAVILOV