Ukraine says rebels get reinforcements, shelling batters truce

KIEV/DONETSK Ukraine (Reuters) - Kiev accused separatists of preparing for renewed conflict in east Ukraine on Tuesday by bringing in "Russian mercenaries" and rearming as heavy shelling increased strains on a crumbling ceasefire.

In Berlin, the European Union's foreign affairs chief said the bloc's foreign ministers would discuss new punitive measures against Russia next week, but German Chancellor Angela Merkel ruled out further economic sanctions for now.