Leading US news outlets have rejected a new Pentagon policy that bars journalists from the building unless they only report information that has been officially authorised by the Department of Defense.

Major outlets, including The New York Times, The Washington Post and CNN, have said they will not agree to the new guidelines, citing concerns it could severely undermine press freedom.

Reporters who do not sign the policy by 17:00EST (22:00BST) on Tuesday must turn in their media credentials and clear out of the Pentagon facilities, the department has said.

Defence Secretary Pete Hegseth has responded to the backlash from various news outlets on X with a hand-waving emoji, suggesting a goodbye.

The Trump administration argues that the changes are needed to protect national security.