Nuclear experts say the president’s rejection of the restrictive deal forced him to neutralize an Iranian threat of his own making.

Strikes on Natanz, Fordow, Isfahan and elsewhere pose little regional radiation risk but could release plumes of toxic chemicals, experts say.

Israel has struck nuclear facilities across Iran, including at Natanz, Isfahan, and Arak. It accuses Iran of seeking to build a nuclear bomb and threatening Israel's existence. Tehran says its nuclear program is for civilian energy purposes.