Here's what to know about the long-strained relationship that poses the risk of a broader conflict.

US officials have suddenly raised the stakes in the long-simmering tensions between the United States and Iran, pointing to new intelligence that they say suggests an imminent threat to US interests in the Middle East.

The potential for armed conflict between the two countries has loomed since the Islamic Revolution and takeover of the US Embassy in Tehran four decades ago. Occasionally, those tensions have escalated into violence.

The recent US assertion that Iran poses an immediate threat has raised fears that the two


How did we get here?

This isn't the war with Iraq. Here's why

The relationship between Iran and the United States has teetered for decades

So, what does Iraq have to do with this?