Biden warns Putin over nuclear, chemical weapons

U.S. President Joe Biden warned Russian President Vladimir Putin not to use chemical or tactical nuclear weapons in his invasion of Ukraine, saying there would be a “consequential” response.

“Don’t. Don’t. Don’t,” Biden said in a televised interview with U.S. broadcaster CBS that is due to air on Sunday night. “It would change the face of war unlike anything since World War II.”

Biden’s warning comes after a surprise counteroffensive by Kyiv put Russian forces in retreat in Ukraine’s northeastern Kharkiv region.