Russia is massing troops along NATO's borders and expanding military units while giving them combat experience, creating the backbone of a fighting force.

US and Israeli forces pound Iran, hitting cities including Tehran, Hamadan and Isfahan, as Iranian counterattacks continue, with damage reported in several Israeli cities.

Finland plans to lift a ban on importing nuclear weapons, citing NATO membership and the need to strengthen national defense.

Add Yahoo as a preferred source to see more of our stories on Google. A senior Ukrainian officer said NATO would suffer heavy losses in a war against Russia.Owen Humphreys/PA Images via Getty Images A Ukrainian officer warned that NATO would face heavier ...

OSLO, March 9 (Reuters) - NATO began its biennial drills in the Arctic on Monday, this time placing more emphasis on the role of

Prime Minister Mark Carney will travel to Norway to observe NATO's massive Cold Response exercise above the Arctic Circle and meet Nordic leaders before visiting the United Kingdom. The trip underscores Canada's focus on Arctic security,

The Iran war took a dramatic turn beyond the Middle East’s borders on Monday when NATO air defenses shot down a second Iranian ballistic missile that had entered Turkish airspace — just five days after the first intercept over the eastern Mediterranean.