Ukraine and Russia have accused each other of violating a 30-hour truce, but it comes as diplomatic efforts pick up, Russia Editor Steve Rosenberg writes.

Russia launched aerial attacks on Ukraine in a sudden end to the Easter truce as Putin questioned Kyiv's offer of a month-long halt to civilian targets.

We have taken note of the ceasefire announcement and also that both sides have continued fighting,” Ukrainian state news agency Ukrinform quoted Dujarric. He reiterated that the UN calls on all parties to end the conflict in line with its resolutions,