Trump missile defense plans may spark arms race, critics say

Since the end of the Cold War, the U.S. has built missile defenses primarily to counter rogue states. President Trump on Thursday expanded the program's ambition, including calling for updated space technology. Officials say the new policy responds to Russian advances. Nick Schifrin talks with Joe Cirincione of the Ploughshares Fund and Rebeccah Heinrichs of the Hudson Institute.