David Cameron is hoping to send a tough message on Ukraine from the leaders of the West's largest powers as the G7 summit in Germany concludes today.
The Prime Minister last night held talks with US president Barack Obama at which both agreed the need to maintain harsh sanctions against Russia until Moscow shows it has fully implemented last year's Minsk peace agreement.
World leaders gathered for a family photo ahead of the G7 summit in Kruen, Germany.
Prime Minister David Cameron joined Canadian Prime Minister Stephen Harper, US President Barack Obama and French President Francois Hollande as they posed with host German Chancellor Angela Merkel.
Barack Obama has urged David Cameron to keep meeting the Nato target of spending 2% of GDP on defence.
David Cameron will use the G7 summit in Germany to call for an international effort to clean up governments and businesses around the world.