Rebel leader demands "proper guarantees" in Ukraine ceasefire

DONETSK Ukraine (Reuters) - Pro-Russian separatists need "proper guarantees" that Ukraine will honour any ceasefire agreement, a rebel leader told Reuters on Thursday, underscoring the lack of trust between the two sides after six months of conflict.

Earlier, speaking on the sidelines of a NATO summit in Wales, Ukraine's President Petro Poroshenko said he would order a ceasefire for his forces in eastern Ukraine if envoys meeting in Minsk accept a proposed peace plan.