Trump is shifting nuclear brinksmanship strategy

Trump, who has vowed to rain down "fire and fury" over North Korea and wants to investi in new nuclear weapons programs, is changing the nuclear calculus on the world stage, TIME's W.J. Hennigan writes:

The big picture: It's "a provocative shift from the sober, almost mournful restraint that has characterized the U.S. posture toward [nuclear] weapons for decades," per Hennigan.