A U.S. citizen known to have fought with pro-Russian separatists in Ukraine between 2014 and 2017 has been killed in Moscow-occupied Donetsk, Russian media reported Friday. Russia-installed authorities in eastern Ukraine had earlier this month reported the American — 64-year-old Russell Bentley — as missing. "Russell Bentley, known as 'Texas,' a real American, truly from Texas, was killed in Donetsk," the head of the pro-Kremlin RT network Margarita Simonyan said on social media. "He was fighting for our guys," she said. Simonyan gave no details on how he died. The Vostok battalion with which he fought confirmed his death, calling...