Trump, famously critical of the alliance the U.S. had led for decades, has already cast doubt across Europe on how reliable ...

Prince William donned battle gear to visit British soldiers in Estonia on Friday (March 21) on a trip aimed at underlining ...

The move is being discussed as part of a possible restructuring of combatant commands that would help the Defense Department ...

Russian deputy foreign minister Alexander Grushko said Monday that any peace deal with Ukraine must include "security ...

Russia is seeking an "ironclad" guarantee that Ukraine is barred from NATO and foreign troops stay out, a deputy foreign ...

The allied militaries did not specify where within the Arctic Circle the exercise took place, but the area is home to Russian ...

Republican leaders are concerned about rumored plans to scale back American military involvement in Europe and Japan.

The Trump administration is weighing a significant restructuring of U.S. military commands, including giving up NATO command.

Europe's biggest military powers are drawing up plans to take on greater responsibilities for the continent's defence from ...

Trump has upended decades of foreign policy, prompting some NATO allies to rethink tying their defense to U.S.-made systems.

President Trump is on a collision course with Republican defense hawks over the question of whether the United States should ...