Both Iran and the US say they are not seeking a war, but it could happen by default.
Reformers have tried to modernise Iran for decades but have failed mainly due to the country's powerful theocracy. And then there are those who want to overthrow the regime altogether.
Iran has threatened to shut down this narrow seaway. Here's why that could be a big deal.
Recent protests in Tehran's Grand Bazaar are part of a long reform movement, not a new revolution.
Seven world leaders with axes to grind are preparing to sit round one table. Sparks will fly.
The recent parliamentary election in Iraqi may have been the most transformative of the post-Saddam era, a pollster from Baghdad and an American academic explain.
It would be a heavy lift, but revising the Iran nuclear deal would have some significant upsides, according to scholars at the University of Maryland.
The Iran nuclear deal will struggle to survive the damage done when Trump pulled the US out on May 8. So will US-Europe relations.
Just as Iran's centre ground was collapsing under political pressure, Donald Trump offered the hardliners a gift.
To understand how Syria has become the theatre for proxy wars between international forces, one has to return to the Arab uprisings and Syria's role as an outlier.
It largely depends on whether Europe will decide to ignore (and pay the price for) US sanctions.
Does the work of the international agency responsible for verifying whether Iran was in compliance with the deal matter to the US?
Ever since the shocking spectacle of the Iranian Revolution and hostage crisis, American conservatives have reserved a special disdain for the Islamic Republic.
Iran is a dangerous mischief-maker in the Middle East – but scrapping the nuclear deal will probably make things worse.
A mummy unearthed during construction in Iran may be the body of a former shah. For the Islamic regime, the discovery is an unwelcome reminder of Iran's secular past. For protesters, it holds promise.
Israel's prime minister failed to undermine the validity of Iran's nuclear deal, and instead ended up demonstrating just how important it is.
The new secretary of state once called the Iran nuclear deal 'unconscionable.' If he supports Trump's instinct to scrap the agreement on May 12, it could unleash violence across the volatile Mideast.
Reportedly passed over for secretary of state because of his moustache, John Bolton has made it into Donald Trump's administration at last.
Trump's pick to lead the State Department believes Iran is 'intent on destroying America.' But ending the Iran nuclear deal could unleash a violent chain reaction, a Mideast scholar says.
A former US Department of Defense and State Department official explains why a hard-line approach on North Korea will likely fail, as it did with Iran.