MOSCOW/KIEV - Fighting flared between Ukrainian and pro-Moscow separatist forces, both sides reported on Sunday, further straining a unilateral ceasefire declared by Ukraine as Russian President Vladimir Putin pressed Kiev to talk to the rebels.
Putin and Ukrainian President Petro Poroshenko, at separate ceremonies marking the anniversary of Nazi Germany's invasion of the Soviet Union, both stressed the need to bring peace to Ukraine's rebellious east.
The seven-day ceasefire came under pressure almost as soon at it began on Friday night, with the government accusing the separatists of attacking its military bases and posts on the Russian border. The violence continued for a second night into Sunday.