Nato countries' pledge to spend 5% of their economic output on defence is Donald Trump's "biggest foreign policy success," ...

European nations are constructing a defensive wall along NATO's eastern frontier as Western intelligence agencies warn Russia ...

Arms supplies to Ukraine have not dropped following a decision by U.S. President Donald Trump to stop direct donations to ...

With peace in Ukraine still elusive, progress from U.S. initiatives have officials discussing a postwar security landscape.

NATO fighter jets were scrambled and air defense systems put on alert in Poland in response to Russia’s latest overnight ...

NATO countries, including Canada, are falling behind Russia and China in the development of Arctic-capable drones — uncrewed ...

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

Ukrainian President Volodymyr Zelenskiy said on Thursday he saw no need to change Ukraine's constitution, which enshrines its ...

After being blindsided by President Donald Trump’s 28-point plan last month, some Europeans have expressed extreme disquiet at being apparently sidelined in talks.

Rep. Thomas Massie (R-Ky.) on Wednesday introduced a bill that would pull the United States out of the NATO alliance. Rep.

Estonia has started constructing concrete bunkers along its border with Russia as nations on NATO's eastern flank rushes to build up land defenses. The Baltic states of Estonia, Latvia and Lithuania ...

Secretary-General Mark Rutte chastised some allies for moving too slowly when it comes to ramping up defense spending.