WASHINGTON — For the White House, these have been dramatic days for nuclear disarmament: First President Trump exited the Iran deal, demanding that Tehran sign a new agreement that forever cuts off its path to making a bomb, then the administration announced a first-ever meeting with the leader of North Korea about ridding his nation of nuclear weapons.

But for the American arsenal, the initiatives are all going in the opposite direction, with a series of little-noticed announcements to spend billions of dollars building the factories needed to rejuvenate and expand America’s nuclear capacity. Read more.