By David Shepardson WASHINGTON (Reuters) -The U.S. Commerce Department on Monday said it will add three Iranian cargo planes serving Russia to a list of aircraft believed to violate U.S. export controls under the Biden administration’s sanctions. Using commercially available data, the Commerce Department identified Boeing 747s operated by Mahan Air, Qeshm Fars Air and Iran Air transporting goods, including electronic items, to Russia in apparent violation of stringent U.S. export controls on Russia related to its invasion of Ukraine. These are the first three Iranian airplanes identified, the …