Prior to the attack, Iran had threatened to retaliate against the U.S. if it became involved in its conflict with Israel.

After nearly two years of stark divisions over the war in Gaza and support for Israel, Democrats seemed to remain at odds over policy toward Iran. Progressives demanded unified opposition before President Donald Trump announced U.

Dmitry Medvedev, the deputy chairman of Russia's Security Council, said on Sunday that U.S. President Donald Trump had started a new war for the U.S. by attacking Iran.