The United States is dramatically scaling back critical security assistance programs for European forces deployed along Russia's threatening frontier, as Donald Trump aggressively demands the continent shoulder more responsibility for its own defense spending.

BRUSSELS — NATO announced plans to beef up the defense of Europe's eastern flank on Friday, two days after Poland shot down drones that had violated its airspace in the first known action of its kind by a member of the Western alliance during Russia's ...

The European Commission on Thursday proposed four flagship European defence projects, including a counter-drone system and a plan to fortify the eastern border, as part of a drive to get the continent ready to defend itself by 2030.