Explosions were heard Friday morning in Tehran, state TV reported, as Israel said it had launched a "preemptive strike" on Iran.

Israel declared a state of emergency in anticipation of a missile and drone strike by Tehran.

Two U.S. officials, speaking on condition of anonymity, said Israel had begun carrying out strikes on Iran and that there was no U.S. assistance or involvement in the operation. CNN reported that U.S. President Donald Trump was convening a cabinet meeting.