Iran's nuclear program has been at the heart of tensions between the US and the Islamic Republic for more than two decades. Washington has said Tehran is working toward developing nuclear weapons, something it wants to prevent at all costs. Iran has denied seeking the bomb, but insists on its right to a civilian nuclear program.

US President Donald Trump has said stopping Iran from acquiring a nuclear weapon was a key reason behind the US decision to, together with Israel attack Iran on February 28. A ceasefire is now in place, and negotiations between the two sides could...