Russia’s Ambassador to the United States, Anatoly Antonov, returned to Moscow on Oct. 5 as his term in Washington concluded, according to state media reports. Antonov’s departure marks the end of his assignment during a period of increasingly hostile relations between the two nations, the worst in decades. The Russian Foreign Ministry confirmed the move, with state news agency TASS citing Antonov’s return. The 69-year-old diplomat, known for his hardline stance, has been Russia’s envoy to Washington since 2017. Throughout his tenure, Antonov was seen as a tough negotiator, particularly on mili…