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

Iran conflict as the most significant geopolitical event since Russia launched its full-scale invasion of Ukraine in 2022. Some energy facilities have been hit in both countries in recent days, although major oil and gas infrastructure and flows have so far been spared.

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 retaliatory missile barrages.