A pro-Russian demonstrator dressed in a Soviet military rides a horse as he takes part in a rally in the southern Ukrainian city of Odessa on April 10, 2014. Russian President Vladimir Putin threatened on April 10 to cut off Ukraine's gas unless Europe drummed up the cash to help cover its debts in an intensifying standoff over the splintered ex-Soviet state. TOPSHOTS/AFP PHOTO/ ALEXEY KRAVTSOV