The D Brief: New nuke tests?; Pushback on European drawdown; Arms-export overhaul expected; Marines axe planned regiment; And a bit more.

Alert: Trump wants to resume nuclear weapons testsPresident Donald Trump says he’s ordered the military to begin testing nuclear weapons “immediately,” which would break a 33-year pause in U.S. and Pentagon policy going back to the end of the Cold War. “The United States has more Nuclear Weapons than any other country,” the president wrote on social media Wednesday. “Russia is second, and China is a distant third, but will be even within 5 years. Because