Netanyahu said during the past week's exchange of air attacks between Israel and Iran that Israel has the capability to take out Iran's nuclear facilities on its own.

Asked about that yesterday, Trump disagreed, saying only the United States, which has the GBU-57 Massive Ordnance Penetrator, a “bunker buster” weapon, could get the job done.

The type of ordnance used tonight hasn't been confirmed, but several American B-2 stealth bombers, the only plane type that can carry the 30,000-pound GBU-57 bombs, took off from Whiteman Air Force Base, Missouri, earlier in the day.

Trump's claim, particularly as it applies to Iran's uranium enrichment at a facility known as Fordo, appears to be true, according to what experts have said.

The facility was built inside a mountain about a half-mile below the Earth's surface and is believed to be safe from almost any bomb except for the GBU-57.

It's possible, however, that Netanyahu was simply considering U.S. firepower as Israel's own, which has been virtually true in the past.

Trump's decision came with an element of surprise, as he had given Iran two weeks to come to an agreement with the United States — amid Israel's attacks, which started on June 13 — on curbing its nuclear ambitions.

Iran has said it is not building nuclear weapons; it said it uses its enrichment facilities for nuclear energy. Tulsi Gabbard, Trump's director of national intelligence, previously said there's no information that Iran is trying to make a nuclear weapon, but Trump rebuked her.

The events may recall the situation in 2003, when the United States invaded Iraq in the wake of 9/11, claiming it possessed weapons of mass destruction, stockpiles of which were not found.