A top arms diplomat at the State Department recently laid out what might come next as Washington upends decades of federal policies on nuclear proliferation.

An Al Jazeera investigation claimed Israel deployed thermobaric weapons in Gaza that could "evaporate" human bodies.

Six months ago, an explosion at the U.S. Steel Clairton Coke Works killed two people. It also heightened the stakes in the life of a western Pennsylvania mill town even as a new mayor tries to raise ...