Smardan, Romania — Near Romania's border with Ukraine this week, about 10,000 troops from NATO's Allied Reaction Force (ARF) rehearsed how they'd respond to a sudden attack from an adversary ...

NATO continues to prepare for military exercises involving the United States this year and beyond, the alliance said.

NATO's Article 5 was invoked only once -- after the 9/11 attacks on the US. President Donald Trump on Thursday questioned if NATO allies would come to the aid of the United States in the event of ...

Asked about NATO Article 5 commitment, Trump says U.S. "not going to defend" allies that fail to meet his spending requirements.

WASHINGTON − The new head of NATO and President Donald Trump agree on one thing: European member states should be paying more for their defense. Seated next to Trump in the Oval Office on ...

Turkey wants closer cooperation with Europe in return for security as the continent looks at ways to reduce reliance on Trump ...

While speaking with the media in Ukraine, Zelenskyy vowed to "resolve" the issue around NATO, saying he is looking to either join the alliance or "something similar." Zelenskyy has been pushing ...

Mr. Putin has long signaled that he will not stop fighting until he extracts major concessions from the West and from Kyiv, including a pledge that Ukraine will not join NATO. But he also appears ...

WASHINGTON (AP) — President Donald Trump on Thursday expressed uncertainty that NATO would come to the U.S.’s defense if the country were attacked, though the alliance did just that after Sept.

Ukrainian President Volodymyr Zelenskyy said he would be willing to step down if Ukraine were granted membership in NATO. "If (it means) peace for Ukraine, if you really need me to leave my post ...

KYIV — Ukrainian President Volodymyr Zelenskyy said for the first time on Sunday that he would be willing to resign from his post in exchange for peace in Ukraine or NATO membership.