Tags: Nuclear

Israeli Prime Minister Benjamin Netanyahu warned the United States on Tuesday that it was negotiating a bad deal with Iran that could spark a "nuclear nightmare," drawing a rebuke from President Barack Obama and exposing a deepening U.S.-Israeli rift.

Israeli Prime Minister Benjamin Netanyahu will escalate his campaign against U.S. President Barack Obama's Iran diplomacy on Tuesday in a speech to Congress whose staging has put unprecedented stress on the two leaders' already strained ties.

The head of the United Nations' nuclear watchdog said on Monday Iran had still not handed over key information to his staff, and his body's investigation into Tehran's atomic program could not continue indefinitely.