By Sarah N. Lynch WASHINGTON (Reuters) – The U.S. Justice Department has charged Russian oligarch Konstantin Malofeyev with violating sanctions imposed on Russia after its invasion of Ukraine, saying on Wednesday he provided financing for Russians promoting separatism in Crimea. Attorney General Merrick Garland said authorities had also disrupted a type of global malicious computer network known as a “botnet” controlled by a Russian military intelligence agency. “The Justice Department will continue to use all of its authorities to hold accountable Russian oligarchs and others who seek to evad…