The W88, estimated to yield 455 kilotons of TNT explosives, is one of the most powerful nuclear warheads in the U.S. arsenal, and is carried on Trident II D5 submarine-launched ballistic missiles (SLBMs) aboard the Navy’s Ohio-class ballistic missile submarines.

The 9 countries armed with nukes as US set to resume weapons testing - IN FOCUS: There has been renewed focus on nuclear arsenals after Russia’s invasion of Ukraine, James C Reynolds and Maryam Zakir-

An emotional trial is underway in Virginia involving a teacher who was shot in her classroom by a 6-year-old student. The case could set a precedent as communities across the US grapple with questions of accountability in the wake of school shootings. Here’s what else you need to know to get up to speed and on with your day.