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Fact check: Under pressure from Israel, President Trump is weighing use of the GBU-57 "bunker buster", a 30,000 lb monster bomb that can obliterate underground nuclear sites.

Checked on June 24, 2025

1. Summary of the results

The analyses reveal a significant discrepancy between the original statement and current events. The US has already used the GBU-57 "bunker buster" bombs in combat operations against Iranian nuclear facilities, rather than merely weighing their use [1] [2] [3].

According to the sources, the US deployed 14 GBU-57 bombs in strikes targeting Iranian nuclear sites [1], specifically hitting the Fordo fuel enrichment plant and two other nuclear facilities [3]. These operations caused severe damage to the facilities [3]. The bombs were delivered using B-2 stealth bombers, which are the only aircraft capable of carrying these 30,000-pound weapons due to their massive size [4] [5].

2. Missing context/alternative viewpoints

The original statement omits several crucial pieces of context that fundamentally change the narrative:

  • The bombs have already been used, not just considered - Multiple sources confirm actual deployment rather than deliberation [1] [2] [3]
  • No explicit confirmation of Israeli pressure - While the statement claims Trump is acting "under pressure from Israel," the analyses do not provide evidence supporting this specific claim [5] [2] [3]
  • Strategic military positioning - The US had reportedly moved B-2 stealth bombers to Guam as preparation for potential military action against Iran, indicating broader strategic planning beyond immediate Israeli influence [6]
  • Technical capabilities and limitations - The sources emphasize that only the United States possesses the capability to deliver these weapons due to the requirement for B-2 bombers, highlighting America's unique military advantage in this scenario [4]

3. Potential misinformation/bias in the original statement

The original statement contains several elements that appear to be factually outdated or misleading:

  • Temporal inaccuracy - The statement uses present tense ("is weighing") when describing actions that have already occurred, based on sources dated June 22, 2025 [1] [2] [3]
  • Unsubstantiated claim about Israeli pressure - The assertion that Trump is acting "under pressure from Israel" lacks supporting evidence in the provided analyses, potentially introducing bias about the decision-making process [5] [2] [3]
  • Framing as deliberation rather than action - By presenting this as a consideration rather than completed military action, the statement significantly understates the current situation and may mislead readers about the actual state of US-Iran military engagement

The statement appears to reflect an earlier stage of events or speculation rather than the current reality of completed military operations against Iranian nuclear facilities.

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Has the GBU-57 bunker buster been used in combat before, and if so, where?
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