Obama to host nuclear security summit

"On April 12 and 13, the president will host a nuclear security summit at the Washington Convention Center," said White House spokesman Robert Gibbs.

"The purpose of the summit is to discuss steps we can collectively take to secure vulnerable nuclear materials and prevent acts of nuclear terrorism," he added.

This confirmation of the highlighted event came after the United States and Russia resumed their talks earlier this month in Geneva on a nuclear arms reduction treaty as a successor to the Strategic Arms Reduction Treaty (START) that expired on Dec. 5, 2009.

Obama has embraced the vision of a world without nuclear weapons. Talking about nuclear weapons, he called them "perhaps the greatest danger to the American people" in his first State of the Union address last month.