Russia protests Biden's remarks about Putin

Russia on Monday protested U.S. President Joe Biden's recent "unacceptable remarks" regarding Russian President Vladimir Putin.

The Russian Foreign Ministry said in a statement that it summoned U.S. Ambassador to Russia John Sullivan on Monday and handed to him a demarche and a note of protest.

Biden's harsh remarks on Putin have "put Russian-U.S. relations on the verge of breaking," it said, warning that hostile actions against Russia will receive "a decisive and firm rebuff."