Yatseniuk: We must be prepared for Putin not to comply with agreements

REUTERS

"Everything depends on Russia and our Western allies – whether we will be able to deter Russia and force it to fulfill at least something it has pledged to do," Yatseniuk said.

A ceasefire was supposed to have come into effect in Ukraine on Sunday at midnight, but militant forces have continued to attack Ukrainian positions in Debaltseve and near Mariupol.