In a series of secret meetings, Israeli Prime Minister Benjamin Netanyahu instructed the heads of Israel’s security forces to significantly ramp up preparations for a strike on Iran’s nuclear installations, Israeli media reported on Tuesday.

The meetings, five in number, were attended by Defense Minister Yoav Gallant, IDF Chief of Staff Herzi Halevi, Mossad head David Barnea and other top officials, according to Channel 12.

Netanyahu reportedly relayed the conclusions drawn from the meetings to U.S. Secretary of State Antony Blinken and U.S. National Security Advisor Jake Sullivan during their recent visits to Israel. The prime minister likewise updated French President Emmanuel Macron during his trip earlier this month to Paris.

Netanyahu reportedly told Blinken, Sullivan and Macron that Israel would act militarily to stop Iran if need be.

The International Atomic Energy Agency said on Monday it was in talks with Iran after the nuclear watchdog’s inspectors last week detected uranium enriched to 84% purity in the Islamic Republic, just below the 90% level needed for nuclear weapons.