WASHINGTON — President Donald Trump on Thursday expressed uncertainty that NATO would come to the United States’ defense if ...

Tesla CEO Elon Musk suggested the U.S. exit the North Atlantic Treaty Organization, or NATO. It’s yet another politically ...

Article 5 of the NATO treaty is the bedrock of the alliance: It is the pledge that an attack on one is an attack on all. It created a single security space among the democratic nations in North ...

For decades, NATO has played a central role in global security. Founded in 1949, the alliance was created to protect member nations and deter aggression. Over the years, it has expanded ...

As some Republican lawmakers push for the US to leave NATO, questions arise about the alliance's role, history, and impact on ...