Here's how the world's largest non-nuclear bomb, the guided Massive Ordnance Penetrator, could go deep underground and shake up Iran's Fordow nuclear fuel-enrichment facility.

Brian Castner is a former explosive ordnance disposal officer who served in the Air Force during the Iraq War.

Here’s how a nuclear bomb actually works. The B61 and the B83 nuclear bombs currently in the United States’ arsenal are thermonuclear, or hydrogen bombs, and quite different than the fission weapons ...