President Barack Obama holds a bilateral meeting with President Francois Hollande of France at the Nuclear Security Summit March 31, 2016 in...
Demonstrators gather outside the Washington Convention Center dressed as nuclear weapons during the Nuclear Security Summit on April 13, 2010 in...
Demonstrators gather outside the Washington Convention Center dressed as nuclear weapons during the Nuclear Security Summit on April 13, 2010 in...
President Barack Obama holds a bilateral with President Xi Jinping of China at the Nuclear Security Summit March 31, 2016 in Washington, DC. World...
Italian Prime Minister Silvio Berlusconi gathers with other world leaders for a group photo during the Nuclear Security Summit at the Washington...
Demonstrators gather outside the Washington Convention Center dressed as nuclear weapons during the Nuclear Security Summit on April 13, 2010 in...
Indian Prime Minister Manmohan Singh looks on as he gathers with other world leaders for a group photo during the Nuclear Security Summit at the...
Kazakh President Nursultan Nazarbayev and U.S. President Barack Obama smile as South African Jacob Zuma and President Russian President Dmitry...
Finland's President Trja Halonen, Ukraine's President Viktor Yanukovych, South Africa's President Jacob Zuma, U.S. President Barack Obama, Russian...
President Barack Obama welcomes world political leaders as they gather for the opening plenary session of the Nuclear Security Summit at the...
President Hu Jintao of China meets with U.S. President Barack Obama on the sidelines of the Nuclear Security Summit at the Washington Convention...
President Hu Jintao of China meets with U.S. President Barack Obama on the sidelines of the Nuclear Security Summit at the Washington Convention...
President Serzh Sargsyan of Armenia meets with U.S. President Barack Obama on the sidelines of the Nuclear Security Summit at the Washington...
President Barack Obama holds a bilateral meeting with President Serzh Sargsyan of Armenia on the sidelines of the Nuclear Security Summit at the...
President Viktor Yanukovych of Ukraine meets with U.S. President Barack Obama on the sidelines of the Nuclear Security Summit at the Washington...
President Viktor Yanukovych of Ukraine meets with U.S. President Barack Obama on the sidelines of the Nuclear Security Summit at the Washington...
Prime Minister Najib Tun Razak of Malaysia holds a bilateral meeting with U.S. President Barack Obama on the sidelines of the Nuclear Security Summit...
King Abdullah II of Jordan meets U.S. President Barack Obama during a bilateral meeting on the sidelines of the Nuclear Security Summit at the...
Security camera surveys the fences surrounding Heysham Nuclear Power Station on November 18, 2009 in Heysham, England. As world leaders prepare to...
Italian Prime Minister Silvio Berlusconi gathers with other world leaders for a group photo during the Nuclear Security Summit at the Washington...
Japanese Prime Minister Shinzo Abe greets Prime Minister of Thailand Prayut Chan-o-cha during a plenary session of the 2016 Nuclear Security Summit...
President Barack Obama speaks as Japanese Prime Minister Shinzo Abe listens during a plenary session of the 2016 Nuclear Security Summit April 1,...
Representatives of delegation listen during a plenary session of the 2016 Nuclear Security Summit April 1, 2016 in Washington, DC. U.S. President...
Representatives of delegation listen during a plenary session of the 2016 Nuclear Security Summit April 1, 2016 in Washington, DC. U.S. President...
Representatives of delegation listen during a plenary session of the 2016 Nuclear Security Summit April 1, 2016 in Washington, DC. U.S. President...
Prime Minister of the United Kingdom David Cameron and Prime Minister of Singapore Lee Hsien Loong listen during a plenary session of the 2016...
President Barack Obama speaks during a plenary session of the 2016 Nuclear Security Summit April 1, 2016 in Washington, DC. President Obama is...
President Barack Obama speaks during a plenary session of the 2016 Nuclear Security Summit April 1, 2016 in Washington, DC. President Obama is...
President Barack Obama speaks during a plenary session of the 2016 Nuclear Security Summit April 1, 2016 in Washington, DC. President Obama is...
President Barack Obama speaks during a plenary session of the 2016 Nuclear Security Summit April 1, 2016 in Washington, DC. President Obama is...
Prime Minister of the United Kingdom David Cameron listens during a plenary session of the 2016 Nuclear Security Summit April 1, 2016 in Washington,...
Japanese Prime Minister Shinzo Abe , South Korean President Park Geun-Hye and U.S. President Barack Obama attend a press conference after their...
South Korean President Park Geun-Hye greets U.S. President Barack Obama while Japanese Prime Minister Shinzo Abe looks on during a meeting at the...
Japanese Prime Minister Shinzo Abe , South Korean President Park Geun-Hye and U.S. President Barack Obama attend a press conference after their...
Japanese Prime Minister Shinzo Abe greets South Korean President Park Geun-Hye as U.S. President Barack Obama looks on during a meeting at the...
South Korean President Park Geun-Hye greets U.S. President Barack Obama while Japanese Prime Minister Shinzo Abe looks on during a meeting at the...
President Barack Obama talks to Prime Minister Narendra Modi of India as President Xi Jinping of the People's Republic of China looks on at the...
President Barack Obama talks to Prime Minister Narendra Modi of India a working dinner with heads of delegations at the Nuclear Security Summit March...
President Barack Obama hosts a working dinner with heads of delegations at the Nuclear Security Summit March 31, 2016 in Washington, DC. World...
French President Francois Hollande speaks to the media during a bilateral meeting with U.S. President Barack Obama at the Nuclear Security Summit...
President Barack Obama holds a bilateral meeting with President Francois Hollande of France at the Nuclear Security Summit March 31, 2016 in...
President Barack Obama holds a bilateral with President Xi Jinping of China at the Nuclear Security Summit March 31, 2016 in Washington, DC. World...
President Barack Obama holds a bilateral with President Xi Jinping of China at the Nuclear Security Summit March 31, 2016 in Washington, DC. World...
President Xi Jinping of China attends a bilateral meeting with President Barack Obama at the Nuclear Security Summit March 31, 2016 in Washington,...
President Barack Obama holds a bilateral with President Xi Jinping of China at the Nuclear Security Summit March 31, 2016 in Washington, DC. World...
President Barack Obama holds a bilateral with President Xi Jinping of China at the Nuclear Security Summit March 31, 2016 in Washington, DC. World...
President Barack Obama holds a bilateral with President Xi Jinping of China at the Nuclear Security Summit March 31, 2016 in Washington, DC. World...
Caroline Kennedy, U.S. Ambassador to Japan, takes a photo alongside Christopher Johnstone, Director for Japan and Oceanian Affairs, Vice President...
President Barack Obama and Prime Minister Shinzo Abe of Japan attend a meeting at the Nuclear Security Summit March 31, 2016 in Washington, DC. World...
President Barack Obama and President Geun-hye of South Korea attend a meeting at the Nuclear Security Summit March 31, 2016 in Washington, DC. World...
President Barack Obama greets President Park Geun-Hye of the Republic of Korea before a meeting at the Nuclear Security Summit March 31, 2016 in...
President Barack Obama greets Prime Minister Shinzo Abe of Japan during a meeting at the Nuclear Security Summit March 31, 2016 in Washington, DC....
President Park Geun-Hye of the Republic of Korea, President Barack Obama and Prime Minister Shinzo Abe of Japan attend a meeting at the Nuclear...
Prime Minister Shinzo Abe of Japan greets President Park Geun-Hye of the Republic of Korea as President Barack Obama looks on during a meeting at the...
President Barack Obama waves as he walks up the stairs of Air Force One before leaving Amsterdam Airport Schiphol March 25, 2014 in Amsterdam,...
President Barack Obama walks up the stairs of Air Force One before leaving Amsterdam Airport Schiphol March 25, 2014 in Amsterdam, Netherlands. Obama...
Air Force One carrying U.S. President Barack Obama taxis before leaving Amsterdam Airport Schiphol March 25, 2014 in Amsterdam, Netherlands. Obama...
President Barack Obama waves as he walks up the stairs of Air Force One before leaving Amsterdam Airport Schiphol March 25, 2014 in Amsterdam,...
President Barack Obama walks up the stairs of Air Force One before leaving Amsterdam Airport Schiphol March 25, 2014 in Amsterdam, Netherlands. Obama...
President Barack Obama walks up the stairs of Air Force One before leaving Amsterdam Airport Schiphol March 25, 2014 in Amsterdam, Netherlands. Obama...