The U.S. has reviewed the assessment, and President Trump has threatened to attack the site. | World News

Iran is secretly hardening a deeply buried nuclear site called Pickaxe Mountain — in open violation of its U.S. agreement. Here's why it can't be ignored.

Trump said Tuesday he thinks Iran “may have” moved centrifuges there used to enrich uranium.

Israeli intelligence has indicated Iran had moved its nuclear centrifuges to Pickaxe Mountain, an underground facility near Natanz.