Threats

NATO innovation chief: Alliance must speed up, or risk Russian invasion

Ukraine shows that “the obsolescence is nearly immediate,” for even the best weapons.

The US military is taking control of more Texas borderland

The Air Force has added about 190 miles of Rio Grande riverbank to the 250 it already oversees.

Fears of a nuclear arms race rise as New START expires

Fading U.S. leadership has countries from Poland to South Korea thinking about nuclear-weapons programs of their own.