The Latest Breaking News from National Security

Defense Department guidance specifically prohibited employees from using Signal to transmit non-public information

President Donald Trump's former national security advisor Mike Waltz on Tuesday defiantly defended his use of a group chat to discuss military plans as he faced accusations of lying during a hearing to be US ambassador to the United Nations.

xAI says that it wants to start servicing federal, local, state, and national security customers.

Keir Starmer’s national security adviser will answer questions from MPs and peers after eight months of repeated requests for him to do so, it has…

The Joint Committee on the National Security Strategy has been calling for Jonathan Powell to appear before it since his appointment in November.

A Hong Kong court began hearing appeals on Monday from 12 democracy campaigners who were jailed for subversion last year during the city's largest national security trial.

A Hong Kong court will hear appeals starting on Monday from 13 democracy campaigners who were jailed for subversion last year during the city's largest national security trial.

On Saturday, the Fars news agency has revealed details about Israel's June 26 attack on the National Security Council. According to the report, Chief Justice Mohseni Ezhai and other top officials attended the meeting, and the president injured his leg while fleeing the scene.

The Senate’s defense policy bill would authorize an extra $32.1 billion for national security spending above what the Pentagon sought.