Iran built its most critical nuclear enrichment facility, Fordo, deep inside a mountain to shield it from attacks.

But the United States has a bomb that experts think could probably reach the subterranean site. President Trump is considering a plan to use it.

Only the U.S. military has the 30,000-pound GBU-57, or Massive Ordnance Penetrator, that may be able to destroy Fordo, and it is the only armed force with aircraft that can carry out a mission with it.🫢