TOPSHOTS Body of one of men killed in a gunfight on April 20, 2014, is carried during a funeral ceremony on April 22, 2014, in the eastern Ukrainian city of Slavyansk. US Vice President Joe Biden met Ukraine's new pro-Western leaders Tuesday to offer firm American backing as Washington and Moscow traded blame over an unravelling peace deal to defuse the country's deep crisis. Under the deal signed by Ukraine, Russia, the United States and the European Union last week, pro-Kremlin rebels holding a string of eastern towns were supposed to disarm and give up the state buildings they have seized. AFP PHOTO / KIRILL KUDRYAVTSEV