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.
US President Barack Obama enjoyed a beer ahead of the G7 summit in Germany today.
Earlier, he joked that he had hoped the summit would fall during Oktoberfest - an annual beer festival - but "there's never a bad day for a beer".
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.