Sen. Ron Wyden (D-Ore.) is calling on the Department of Justice to investigate the risks associated with Trump administration ...

Top national security officials — in the White House, the Pentagon and the State Department — couldn’t provide answers.

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Roughly a week after Donald Trump started his second term as president, the U.S. military issued an order to three freight ...

Hegseth ordered the abrupt cancellation of weapons flights to Ukraine in February without Trump’s knowledge and blindsiding top national security officials.

The suspension reportedly affected 11 shipments of artillery shells and weapons from Dover Air Force Base and a U.S. base in ...

President Donald Trump has ousted National Security Adviser Mike Waltz and announced that he will nominate him as the next ...

The Washington Post reported that Donald Trump soured on Waltz over Waltz's support for an Israeli attack on Iran.

Marco Rubio serving as both Secretary of State and national security adviser could be "ultimately disadvantageous" to President Trump, says former adviser John Bolton.

A clone of the messaging app Signal, which was used by since-ousted national security advisor Mike Waltz, has been hacked.

President Donald Trump said Sunday that he plans to appoint a new national security advisor in about six months, telling ...

Mike Waltz was removed as national security advisor, followed by the president nominating him for another position.