(L-R) Dutch Prime Minister Mark Rutte, Croatia's President Ivo Josipovic, Slovenian acting Prime Minister Alenka Bratusek, NATO Secretary-General Anders Fogh Rasmussen, Britain's Prime Minister David Cameron and U.S. President Barack Obama watch a fly-past by the Red Arrows during the NATO summit at the Celtic Manor resort, near Newport, in Wales September 5, 2014. The resort is the venue for the two day NATO summit which started on Thursday. REUTERS/Andrew Winning (BRITAIN - Tags: MILITARY POLITICS)