The war has raised new fears of Russian aggression among countries along NATO’s eastern border, particularly the Baltic States and Poland, which has gained significant clout within the alliance.

It costs over $2.5 billion and has been described by Warsaw as "the largest operation to strengthen Poland's eastern border, NATO's eastern ... uncertainty and the new arms race started by Putin ...

Uneasiness grows over continued U.S. support for the 75-year-old alliance as Trump casts doubt on support from other members ...

British troops led a show of force close to Romania’s border with Ukraine to show how a new NATO unit can counter threats. Hundreds of soldiers, fighter jets, attack helicopters and tanks joined ...

SMARDAN, Romania — NATO ... border as worries grow over its most powerful member, the United States. The drills in Romania, which borders Ukraine, come as a shaken Europe grapples with a new ...