Ukraine's President Petro Poroshenko said he would order a ceasefire from noon on Friday, paving the way for implementation of a "stage-by-stage peace plan" for his country.
Speaking on the sidelines of the Nato summit in Wales on, he added that the ceasefire was conditional on a planned meeting going ahead in Minsk on Friday of envoys from Ukraine, Russia and Europe's OSCE security watchdog.
Angus Raffle, 8, says his surprise meeting with the President at Stonehenge was "awesome". His mother says she "squealed like a teenager".
The language has been ramped up at this Nato summit, yet caution appears the order of the day after the mistakes of recent history.
The US President's motorcade pulled up at the school with his black stretch limousine bearing a Welsh flag for the first time in history.