After two decades of diplomacy and, more recently, airstrikes from Israel and the US, the situation remains unresolved. President Trump's claim that three Iranian nuclear sites were "totally obliterated" during Saturday's bombing is being questioned.

A reactor in Tehran is a monument to the U.S. relationship with Iran when the country was led by a secular, pro-Western monarch.

“Remember, Iran cannot have any nuclear weapons. Very simple. Don’t have to go too deep into it. They just can’t have nuclear weapons.” “Iran’s leaders should understand that I do not have a policy of containment; I have a policy to prevent Iran from obtaining a nuclear weapon.”