The relationship between the United States and Iran is one of the most complex in modern history. Over the last century, it ...

Onetime allies, the United States and Iran have seen tensions escalate repeatedly in the four decades since the Islamic Revolution. U.S. and British intelligence agencies help elements in the Iranian ...

The governments of both countries have repeatedly cast the other as evil, perpetuating a cycle that has culminated in the present war.

The following timeline outlines how the crisis escalated into a large-scale conflict involving multiple states and threatening wider regional ...