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Officials from Russia’s U.S. embassy in D.C. warned that Biden’s recent comments regarding the Russian President put strained relations between the two nations “under the threat of collapse.”

Anatoly Antonov will be returning to Moscow to “discuss ways to rectify Russia-U.S. ties that are in crisis,” officials said.

“The unconstructive course of the Administration towards our country does not meet the interests of Russia and the United States, while certain ill-considered statements of high-ranking U.S. officials have put the already excessively confrontational relations under the threat of collapse,” the Russian embassy said in a statement.

Biden recently warned that Putin would “pay a price” for Russia’s interactions regarding the 2020 election.

Biden was asked if he thought Putin was a killer.

Biden said, “I do.”

White House Press Secretary Jen Psaki said Biden did not regret his remarks.

“Nope. The president gave a direct answer to a direct question,” Psaki said.

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Putin responded to Biden’s comments, telling reporters that he wished the president good health. Other top Russian officials were more critical, with Kremlin spokesman Dmitry Peskov asserting that Biden “doesn’t want to normalize relations.”

The Russian embassy added that “good and pragmatic ties between Russia and the United States meet the aspirations of our countries and the entire international community.”