Moscow's campaign of hybrid warfare against NATO countries is getting close to the point of causing "substantial" casualties, a senior official at the defense alliance warned. “What really worries me ...

Western intelligence agencies accuse Russia of increasingly engaging in hybrid warfare since invading Ukraine. What exactly constitutes hybrid warfare, and what's its intended goal? In the span of ...

Hybrid warfare refers to a range of activities stopping short of open fighting, like cyberattacks, information campaigns or the targeting of vulnerable infrastructure, such as undersea cables.

While Russia has myriad weapons in its hybrid warfare toolkit, including cyber attacks and disinformation campaigns, NATO's undersea assets have emerged as among the most vulnerable to sabotage.

U.S. allies warned of "hybrid warfare" Tuesday after two undersea communication cables were severed in the Baltic Sea, raising suspicions that they may be the latest acts of sabotage targeting the ...

U.S. allies warned of "hybrid warfare" Tuesday after two undersea communication cables were severed in the Baltic Sea, raising suspicions that they may be the latest acts of sabotage targeting the ...