Declaring that space is the new warfighting domain, President Donald Trump on Thursday vowed the U.S. will develop an unrivaled missile defense system to protect against advanced hypersonic and cruise missile threats from competitors and adversaries.

By Deb Reichmann, Lolita Baldor, Associated Press

The threat from North Korea has the U.S. reassessing its missile defense system and has prompted moves in Congress to boost missile defense funding. But does the current system really work? We got perspectives from two experts.

By Larisa Epatko

NewsHour correspondent Jeffrey Kaye of KCET-Los Angeles provides an update on the military's defense against missile attacks, including efforts to shoot down missiles aimed at the United States.

North Korea announced preparations to test a long-range ballistic missile, followed by reports that the United States readied its ground-based interceptor missile-defense system. The moves have sparked a debate about how the United States should respond to a missile threat.