In a floor speech Wednesday, Sen. John McCain (R-Ariz.) accused Sen. Rand Paul (R-Ky.) of "working for Vladimir Putin," the Washington Examiner reported.

McCain said that any senator that objects to a motion on the floor to support the inclusion of Montenegro into the North Atlantic Treaty Organization (NATO) would be "achieving the objectives of Vladimir Putin."

According to the New York Times, Russian actors are being accused of allegedly plotting a coup against the Balkan nation's government.

"I do not say that lightly," McCain continued.

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The presiding member at the time, Sen. Jeff Flake (R-Ariz.), yielded the floor to Paul, who said simply, "I object."

With a note of emotion, McCain responded, saying Paul objected and left the floor "without justification or any rationale for the action he has taken."

"That is really remarkable," he said. "So, I repeat again, the senator from Kentucky is now working for Vladimir Putin."

Paul later released a statement saying he objected because he does not want America to take on any further debt that could arise from adding another nation to NATO, which receives more funds from the United States than any other country.

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