ROUGH CUT (NO REPORTER NARRATION)<br/> <br />The White House warned Russia on Friday (April 18) that Moscow would face tougher sanctions if it failed to abide by a new international deal on Ukraine or moved to send Russian forces into eastern Ukraine.<br/> <br />"Those costs and sanctions could include targeting very significant sectors of the Russian economy," Susan Rice, President Barack Obama's national security adviser, told reporters.<br/> <br />She said Washington was watching very closely to see whether Russia met its obligations to use its influence to get pro-Russian separatists in eastern Ukraine to disarm and abandon public buildings they had seized.<br/> <br />Separatists said on Friday they were not bound by the agreement brokered by the United States, Russia, Ukraine and the European Union in Geneva on Thursday (April 17).
