WASHINGTON, DC - MARCH 31: (AFP OUT) U.S. President Barack Obama talks to Prime Minister Narendra Modi of India a working dinner with heads of delegations at the Nuclear Security Summit March 31, 2016 in Washington, DC. World leaders are gathering for a two-day conference that will address a range of issues including ongoing efforts to prevent terrorist groups from accessing nuclear material. (Photo by Dennis Brack - Pool/Getty Images)
