British Prime Minister David Cameron at the official welcoming ceremony for leaders of the world's major powers who arrived for the summit of the "Group of Eight" in the town of Lough Erne in Northern Ireland.

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British Prime Minister David Cameron, left, meet U.S. President Barack Obama at the official welcoming ceremony for leaders of the world's major powers who arrived for the summit of the "Group of Eight" in the town of Lough Erne in Northern Ireland.

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British Prime Minister David Cameron, left, meets U.S. President Barack Obama at the official welcoming ceremony for leaders of the world's major powers who arrived for the summit of the "Group of Eight" in the town of Lough Erne in Northern Ireland.

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U.S. President Barack Obama at the official welcoming ceremony for leaders of the world's major powers who arrived for the summit of the "Group of Eight" in the town of Lough Erne in Northern Ireland.

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British Prime Minister David Cameron, left, meets Russian President Vladimir Putin at the official welcoming ceremony for leaders of the world's major powers who arrived for the summit of the "Group of Eight" in the town of Lough Erne in Northern Ireland.

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Russian President Vladimir Putin at the official welcoming ceremony for leaders of the world's major powers who arrived for the summit of the "Group of Eight" in the town of Lough Erne in Northern Ireland.

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French President Francois Hollande at the official welcoming ceremony for leaders of the world's major powers who arrived for the summit of the "Group of Eight" in the town of Lough Erne in Northern Ireland.

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British Prime Minister David Cameron meets German Chancellor Angela Merkel at the official welcoming ceremony for leaders of the world's major powers who arrived for the summit of the "Group of Eight" in the town of Lough Erne in Northern Ireland.

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British Prime Minister David Cameron meets Japanese Prime Minister Shinzo Abe at the official welcoming ceremony for leaders of the world's major powers who arrived for the summit of the "Group of Eight" in the town of Lough Erne in Northern Ireland.

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British Prime Minister David Cameron at the official welcoming ceremony for leaders of the world's major powers who arrived for the summit of the "Group of Eight" in the town of Lough Erne in Northern Ireland.

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July 17, 2013. British Prime Minister David Cameron, left, greets French President Francois Hollande at the official meeting ceremony of the Group of Eight summit in the town of Lough Erne in Northern Ireland.

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July 17, 2013. French President Francois Hollande at the official meeting ceremony of the Group of Eight summit in the town of Lough Erne in Northern Ireland.

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July 17, 2013. July 17, 2013. Canadian Prime Minister Stephen Harper at the official meeting ceremony of the Group of Eight summit in the town of Lough Erne in Northern Ireland.

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July 17, 2013. British Prime Minister David Cameron, left, greets Italian Prime Minister Enrico Letta at the official meeting ceremony of the Group of Eight summit in the town of Lough Erne in Northern Ireland.

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July 17, 2013. British Prime Minister David Cameron, left, greets European Council President Herman Van Rompuy at the official meeting ceremony of the Group of Eight summit in the town of Lough Erne in Northern Ireland.

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July 17, 2013. British Prime Minister David Cameron, left, greets European Council President Herman Van Rompuy at the official meeting ceremony of the Group of Eight summit in the town of Lough Erne in Northern Ireland.

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July 17, 2013. British Prime Minister David Cameron, left, greets European Commission President Jose Manuel Barroso at the official meeting ceremony of the Group of Eight summit in the town of Lough Erne in Northern Ireland.

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July 17, 2013. British Prime Minister David Cameron, left, greets Canadian Prime Minister Stephen Harper at the official meeting ceremony of the Group of Eight summit in the town of Lough Erne in Northern Ireland.

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July 17, 2013. British Prime Minister David Cameron, left, greets Canadian Prime Minister Stephen Harper at the official meeting ceremony of the Group of Eight summit in the town of Lough Erne in Northern Ireland.

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July 17, 2013. British Prime Minister David Cameron, left, greets Japanese Prime Minister Shinzo Abe at the official meeting ceremony of the Group of Eight summit in the town of Lough Erne in Northern Ireland.

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July 17, 2013. British Prime Minister David Cameron, left, greets Japanese Prime Minister Shinzo Abe at the official meeting ceremony of the Group of Eight summit in the town of Lough Erne in Northern Ireland.

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July 17, 2013. British Prime Minister David Cameron, left, greets European Commission President Jose Manuel Barroso at the official meeting ceremony of the Group of Eight summit in the town of Lough Erne in Northern Ireland.

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July 17, 2013. British Prime Minister David Cameron greets German Chancellor Angela Merkel at the official meeting ceremony of the Group of Eight summit in the town of Lough Erne in Northern Ireland.

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July 17, 2013. British Prime Minister David Cameron greets German Chancellor Angela Merkel at the official meeting ceremony of the Group of Eight summit in the town of Lough Erne in Northern Ireland.

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July 17, 2013. British Prime Minister David Cameron greets German Chancellor Angela Merkel at the official meeting ceremony of the Group of Eight summit in the town of Lough Erne in Northern Ireland.

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July 17, 2013. Angela Merkel, right, at the official meeting ceremony of the Group of Eight summit in the town of Lough Erne in Northern Ireland.

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July 17, 2013. British Prime Minister David Cameron, left, greets Russian President Vladimir Putin at the official meeting ceremony of the Group of Eight summit in the town of Lough Erne in Northern Ireland.

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July 17, 2013. British Prime Minister David Cameron, left, greets U.S. President Barack Obama at the official meeting ceremony of the Group of Eight summit in the town of Lough Erne in Northern Ireland.

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July 17, 2013. British Prime Minister David Cameron, left, greets U.S. President Barack Obama at the official meeting ceremony of the Group of Eight summit in the town of Lough Erne in Northern Ireland.

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July 17, 2013. British Prime Minister David Cameron, left, greets U.S. President Barack Obama at the official meeting ceremony of the Group of Eight summit in the town of Lough Erne in Northern Ireland.

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July 17, 2013. U.S. President Barack Obama at the official meeting ceremony of the Group of Eight summit in the town of Lough Erne in Northern Ireland.

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July 17, 2013. U.S. President Barack Obama at the official meeting ceremony of the Group of Eight summit in the town of Lough Erne in Northern Ireland.

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July 17, 2013. U.S. President Barack Obama at the official meeting ceremony of the Group of Eight summit in the town of Lough Erne in Northern Ireland.

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July 17, 2013. British Prime Minister David Cameron, left, greets U.S. President Barack Obama at the official meeting ceremony of the Group of Eight summit in the town of Lough Erne in Northern Ireland.

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July 17, 2013. British Prime Minister David Cameron, left, greets Russian President Vladimir Putin at the official meeting ceremony of the Group of Eight summit in the town of Lough Erne in Northern Ireland.

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July 17, 2013. British Prime Minister David Cameron, left, greets Russian President Vladimir Putin at the official meeting ceremony of the Group of Eight summit in the town of Lough Erne in Northern Ireland.

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July 17, 2013. Russian President Vladimir Putin at the official meeting ceremony of the Group of Eight summit in the town of Lough Erne in Northern Ireland.

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July 17, 2013. British Prime Minister David Cameron, left, greets U.S. President Barack Obama at the official meeting ceremony of the Group of Eight summit in the town of Lough Erne in Northern Ireland.

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July 17, 2013. British Prime Minister David Cameron, left, greets Russian President Vladimir Putin at the official meeting ceremony of the Group of Eight summit in the town of Lough Erne in Northern Ireland.

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July 17, 2013. British Prime Minister David Cameron, left, greets Russian President Vladimir Putin at the official meeting ceremony of the Group of Eight summit in the town of Lough Erne in Northern Ireland.

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July 17, 2013. British Prime Minister David Cameron, left, greets Russian President Vladimir Putin at the official meeting ceremony of the Group of Eight summit in the town of Lough Erne in Northern Ireland.

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July 17, 2013. British Prime Minister David Cameron, left, greets Russian President Vladimir Putin at the official meeting ceremony of the Group of Eight summit in the town of Lough Erne in Northern Ireland.

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July 17, 2013. British Prime Minister David Cameron, left, greets Russian President Vladimir Putin at the official meeting ceremony of the Group of Eight summit in the town of Lough Erne in Northern Ireland.

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July 17, 2013. British Prime Minister David Cameron, left, greets Russian President Vladimir Putin at the official meeting ceremony of the Group of Eight summit in the town of Lough Erne in Northern Ireland.

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July 17, 2013. British Prime Minister David Cameron greets German Chancellor Angela Merkel at the official meeting ceremony of the Group of Eight summit in the town of Lough Erne in Northern Ireland.

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