U.K. Prime Minister David Cameron & U.S. President Barack Obama

U.K. Prime Minister David Cameron & U.S. President Barack Obama

Jewel Samad/AFP via Getty Images

U.K. Prime Minister David Cameron, left, welcomes U.S. President Barack Obama during the official arrivals for the start of the G8 Summit at the Lough Erne resort near Enniskillen in Northern Ireland on June 17, 2013.