Israeli Prime Minister Benjamin Netanyahu said on Sunday that Iran needs to know that Western powers will use their militaries to stop the country from gaining nuclear weapons. "They have to know you’ll be prepared to take military action," Netanyahu said on CBS's Face the Nation. "That’s the only thing that will get their attention." The prime minister also said that newly elected Iranian President Hassan Rowhani was a "wolf in sheep's clothing" who won't stop the country from obtaining nuclear weapons. Iran, according to Netanyahu, is nearing the red line he laid out in a speech to the U.N. last fall, and Israel may be forced to act, because it's closer and more vulnerable to a nuclear Iran than the United States is.