Biden said Putin would "pay a price" for interfering in U.S. elections.
U.S. President Joe Biden says he agrees that Russian President Vladimir Putin is a "killer."
Speaking in an interview with or ABC News' George Stephanopoulos, Biden said Putin would "pay a price" for interfering in U.S. elections.
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"He will pay a price," Biden said. "We had a long talk, he and I, when we – I know him relatively well. And the conversation started off, I said, 'I know you and you know me. If I establish this occurred, then be prepared."
Stephanopoulos asked: "So you know Vladimir Putin. You think he's a killer?"
"Mmm hmm, I do," Biden replied.
While the president said "you'll see" that Putin is "going to pay," he did not elaborate.