Some experts said they believe the U.S. strikes have the potential to lead to a "fork-in-the-road" moment that could result in Tehran taking an even more dangerous path.

Iran just ended its cooperation with international inspectors, suggesting no post-bombing deal is imminent. That may point to a long game of hide-and-seek, punctuated by military action.

The Pentagon said on Wednesday that U.S. strikes 10 days ago had degraded Iran's nuclear program by up to two years, suggesting the U.S. military operation likely achieved its goals despite a far more cautious initial assessment that leaked to the public.