A black ribbon is attached to a flag, which combines EU and Ukrainian flags, to mark a day of mourning for the victims of clashes between anti-government protesters and Interior Ministry members in Kiev February 22, 2014. Protesters seized the Kiev office of President Viktor Yanukovich on Saturday and the opposition demanded a new election be held by May, as the pro-Russian leader’s grip on power rapidly eroded following bloodshed in the capital. REUTERS/Vasily Fedosenko