Israeli intelligence has assessed that Iran has moved thousands of nuclear centrifuges into a deep underground site in the Natanz area known as Pickaxe Mountain, making them harder to target in aerial strikes, according to a Wall Street Journal report citing US and Israeli officials.

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.