Tensions are running high between the US and its NATO allies. What the future of NATO looks like without the US.

European Union leaders on Friday downplayed skepticism from U.S. President Donald Trump about solidarity among NATO members.

Under a 2023 law, a president can’t unilaterally withdraw from the alliance without a two-thirds supermajority in the Senate ...

Our cooperation with likeminded @NATO partners is vital for international security. For Ukraine. For stepping up our joint ...

Former president of the European Commission Jean Claude Juncker cautioned against Ukraine joining Nato as a form of security ...

European leaders backed plans to spend more on defence and continue to stand by Ukraine in a world upended by Donald Trump's ...

Today, I explain the battle over how to spend the EU’s new €150bn defence fund, and ask whether medicines are Europe’s next foreign dependency set to be exploited. Ursula von der Leyen has nine days ...

Reuters, the news and media division of Thomson Reuters, is the world’s largest multimedia news provider, reaching billions ...

President Trump expressed uncertainty that NATO would come to the United States’ defense if the country were attacked, though ...

As Europe prepares for a world without American military aid, the E.U. plans to invest €800 billion on defense.

European Union leader Ursula von der Leyen says the bloc is "in an era of rearmament," as Trump casts rising doubt on old ...

European leaders agreed to surge defense spending and voiced near-unanimous support for Ukraine at an extraordinary meeting ...