Wagner Group leader Yevgeny Prigozhin on Tuesday mocked the United States after a senior U.S. diplomat met with members of the military junta in Niger. "The U.S. is trying to keep the Wagner group out of Niger," Prigozhin said in a message posted on Telegram, according to translations in Russian media. "'Heavy artillery' is being brought in for this. Acting Deputy Secretary of State Victoria Nuland is in a country that defeated colonialism under Russian flags." Prigozhin directly referenced Nuland's quote about the "risks to their sovereignty" in relation to Wagner and praised his fighters. "I am proud of the...