India has key role in responsibly monitoring nuclear weapons : US

As leaders from 50 nations began arriving for the Nuclear Security Summit here, the US said "India has a very important role to play with respect to responsible stewardship of nuclear weapons and nuclear materials." Meeting in the shadow of Brussels and Lahore terror attacks, Prime Minister Narendra Modi and other leaders will over the next two days discuss how to prevent terrorists and other non state actors from gaining access to nuclear materials and technologies.