Barack Obama told the United Nations General Assembly today that the United States will "do what we must" to stop Iran from getting nuclear weapons.
The president also said that while there was still time for a diplomatic solution to the crisis that "time is not unlimited."
Amid mounting tensions over Iran's nuclear program and talk of a military strike by Israel on Iran, Obama has refused demands from Israeli Prime Minister Benjamin Netanyahu to set an explicit "red line" for Tehran.
Netanyahu has shown growing impatience over Obama's entreaties to hold off on attacking Iran's nuclear sites to give sanctions and diplomacy more time to work.
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