1. The Trump administration is expanding its strategy to confront North Korea, hoping to stop missiles before they get far from Korean airspace.

An emergency request last week to Congress — for $4 billion to deal with North Korea — hinted at the approach. Defense officials are working on cyberweapons that could interfere with the North’s control systems before missiles are launched — and drones that could shoot them down immediately after takeoff.

The “all-out effort” is in response to the North’s progress in developing intercontinental ballistic missiles capable of delivering a nuclear bomb to the United States mainland.