The top senator overseeing U.S. intelligence agencies tells Axios he's deeply concerned cyberattacks launched by Russian President Vladimir Putin could morph into a broader war that draws in NATO nations — including the United States.
Why it matters: President Biden has ruled out American boots on the ground in Ukraine. But Senate Intelligence Committee Chairman Mark Warner (D-Va.), said in an interview Wednesday that Putin's actions during the next few days risk triggering NATO's Article 5 collective defense principle.
