 Russia's ambassador to the United States, Anatoly Antonov, was in an optimistic mood ahead of his return to Washington on Sunday, expecting meetings scheduled with U.S. colleagues next week to be constructive. President Vladimir Putin and his U.S. counterpart Joe Biden agreed to return their respective ambassadors to Washington and Moscow during talks in Geneva on Wednesday. Moscow recalled Antonov for consultations after Biden said in March that he believed Putin was a killer. The U.S. ambassador later returned to Washington for consultations, too. Antonov said he was returning with an optimistic mindset and that meetings would begin on Monday and continue throughout the week. So you get notified about fresh news updates.