The 30,000 pound munition, equipped by the U.S. B-2 Spirit stealth bomber may be the only aerial bomb that can reach Iran's Fordow nuclear site.

As Iran remains undeterred by President Donald Trump’s calls for surrender in its conflict with Israel, the president is considering using a “bunker-buster” bomb to take out a critical Iranian nuclear facility.

While U.S. President Donald Trump is clearly weighing his options to strike Iran or not, a new wrinkle in his calculus may be emerging. Those famed bunker-buster bombs, the GBU-57, might not be the magic bullet some experts and the media are making them out to be.