U.S. Secretary of State Marco Rubio and the Trump administration’s new envoy to NATO are seeking to reassure wary NATO members of the U.S. commitment to the alliance.

The Senate has confirmed Matt Whitaker as President Donald Trump’s U.S. ambassador to NATO.

President Donald Trump is expressing uncertainty that NATO would come to the United States' defense if the country were attacked.

President Donald Trump’s pick as NATO ambassador is reassuring senators at his confirmation hearing that the Trump administration’s commitment to the military alliance is “ironclad.”.

President-elect Donald Trump says he's chosen former acting Attorney General Matt Whitaker to serve as U.S. ambassador to NATO.