Pres. Obama: U.S. Will Do ‘What We Must’ To Block Iran Nukes

Source:  Mary Bruce / ABC News President Obama warned Iran before the U.N. General Assembly today that the U.S. will “do what we must” to prevent it from obtaining a nuclear weapon. “Time and again, it has failed to take the opportunity to demonstrate that its nuclear program is peaceful, and to meet its obligations to the United [...]