U.S. President Barack Obama (C) is welcomed by European Council President Herman Van Rompuy (R) and European Commission President Jose Manuel Barroso as they shake hands at the European Council headquarters ahead of a G7 meeting in Brussels June 4, 2014. The world's leading industrialized nations meet without Russia for the first time in 17 years on Wednesday, leaving President Vladimir Putin out of the talks in retaliation for his seizure of Crimea and Russia's part in destabilizing eastern Ukraine. REUTERS/Laurent Dubrule (BELGIUM - Tags: POLITICS BUSINESS TPX IMAGES OF THE DAY)