Joe Biden has put US-Russia ties 'on the verge of rupture': Moscow

Russia on Monday summoned the US ambassador in protest after President Joe Biden branded Russian leader Vladimir Putin a "war criminal" for Moscow's actions in Ukraine, saying he had endangered ties.

"Such statements by the American president, which are not worthy of a high-ranking statesman, have put Russian-American relations on the verge of rupture," the foreign ministry said in a statement.