Ukraine claimed it carried out an underwater drone strike on Dec. 15, the first such attack in maritime warfare, that ...

U.S. officials, Ukrainian leaders and European allies wrapped up a weekend of peace talks in Berlin, Germany, on Monday. U.S.

US president Donald Trump believes he can get Vladimir Putin to accept a Nato-like article five security guarantee for ...

NATO Secretary General Mark Rutte tried to curry favor with US President Donald Trump. All the other major member states also ...

Ukraine could receive security guarantees modeled on NATO’s Article 5 mutual defense pledge under a proposed peace deal with ...

U.S. administration officials signaled Monday a peace deal between Russia and Ukraine may be closer than ever.

America’s presence and the network of US bases across Europe are vital to NATO’s mutual defense guarantee, Washington’s ...

Ukraine has relinquished its ambition of joining the NATO military alliance in exchange for Western security guarantees as a ...

President Volodymyr Zelenskiy offered to drop Ukraine's aspirations to join the NATO military alliance as he held five hours ...

Former Swedish Foreign Minister Tobias Billström said after the Ukraine war, Europe must be ready for further Russian ...

NATO Secretary General Mark Rutte warned Thursday that members of the alliance could be “Russia’s next target,” calling for a rapid rise in defense spending to prevent a war similar to those seen by ...

President Trump’s detractors on both sides of the Atlantic blamed him for rupturing the NATO alliance and for straying into ...