The Latest Breaking News from National Security

FBI Director Kash Patel may not have been part of a Signal chat in which other Trump administration national security officials discussed detailed attack plans

Iran isn’t building a nuclear weapon, the Trump administration says. But this hasn’t stopped the march toward war.

Greenlanders are furious over proposals by Donald Trump that the US take over the territory

National Security Adviser Mike Waltz and other Trump officials' private phone numbers linked to Signal accounts were exposed online, a German report revealed.

President publicly supporting national security adviser to avoid admitting fault in security blunder, say sources

When top White House defense and national security leaders discussed plans for an attack on targets in Yemen over the messaging app Signal, it raised many questions about operational security and recordkeeping and national security laws. It also puts Signal in the spotlight.

When the natural environment is stretched beyond its ability to meet basic human needs for food, clean air, drinkable water and shelter, it is not just a humanitarian concern for the world community. Research shows that these crises are a matter of national security for the U.S. and other countries.

Signal app messages revealed Yemen bombing timelines, prompting debate about their classification and implications.

House Democrats have moved to potentially force the Trump administration to produce crucial documents related to the leaked Signal text messages that divided the nation in recent days due to concerns over national security.