By Kingston Reif | Sep 17, 2012
Few national security issues are as important to President Barack Obama as reducing the threat posed by nuclear weapons. Obama devoted his first major foreign policy speech as president to the subject in April 2009 in Prague, where he pledged America's commitment to work toward a world free of nuclear weapons. In particular, the president laid out a series of interim steps that the United States must take to reduce the risk of a nuclear catastrophe.