Russia is "the main actor" in hybrid attacks on the alliance, said a senior NATO official following a spate of incidents.

Congress passed legislation that a president cannot unilaterally withdraw from NATO, setting up a major legal fight if Trump ...

President also plans to ask for "financial contribution" for maintenance of remaining troops, European diplomatic source said ...

NATO has taken over air defenses in Poland from the US just days before the inauguration of President-elect Donald Trump, according to a NATO spokesman, with questions looming about the incoming ...

Mark Rutte, incoming secretary general of the North Atlantic Treaty Organization (NATO), during a transition ceremony at the ...

Thousands of British troops have been deployed to Romania and Bulgaria to prepare for a Russian invasion on Nato in the near ...