A Russian man pleaded guilty on Thursday to illegally exporting electronics to Russia for possible military use, in violation of sanctions imposed after Moscow’s full-scale invasion of Ukraine, the U.S. Department of Justice said. Maxim Marchenko, who lived in Hong Kong, operated a network with two other unidentified Russians that fraudulently bought large quantities of military-grade microelectronics from American distributors on behalf of Russia-based end users, according to U.S. authorities. The 51-year-old, who was arrested in September, pleaded guilty to smuggling and money laundering in …