Israel and Iran's long-simmering tensions erupted into missile attacks last Friday, when Israel launched a suprise attack against military and nuclear targets in Iran and wiped out the top echelon of Iran's military command.

An Israeli official said that "there's never a 100 percent guarantee," but "a nuclear disaster" should "not happen."

As Israel pounds Iran with airstrikes targeting military facilities and its nuclear sites, officials in Tehran have proposed a variety of steps the Islamic Republic could take outside of launching ret