Donald Trump has hinted at strikes against Iran, but is seeking guarantees that the GBU-57 anti-armor bomb will destroy the deep underground Fordo nuclear facility.

Trump has discussed the possibility of strikes on Iran, but has delayed authorizing them because of uncertainties about the effectiveness of conventional bombs, particularly the GBU-57, on the Fordo facility. It lies at considerable depth and assessments suggest that only a tactical nuclear bomb could ensure complete destruction. Although the attacks could delay Iran's nuclear program, the actual destruction of Fordo is considered impossible without US involvement.