Skepticism of the administration’s national security justification gained momentum in recent weeks as Trump has cited national security to bolster the legal prospects for some of his other favored ...

WASHINGTON, Sept 22 (Reuters) - As President Donald Trump's agenda has increasingly encountered resistance, he has turned to a familiar strategy: invoking national security. Just this weekend, Trump ...

Trump appointed Secretary of State Marco Rubio as his full-time national security adviser on Sept. 22. Here's what he'll be tasked to do in the role.