Trump threatens Iran 'with a force that has never been seen before' if it retaliates over Khamenei killing

Donald Trump

Mary Altaffer/AP

• President Trump has threatened to hit Iran "with a force that has never been seen before."
• His warning came as Iran weighs its response to the killing of Supreme Leader Ayatollah Ali Khamenei.
• Early today, Israel launched a "broad wave of strikes" against targets in the heart of Tehran.

President Donald Trump has warned Iran not to retaliate after it was confirmed that the country's Supreme Leader, Ayatollah Ali Khamenei, was...