China has surged sales to Russia of machine tools, microelectronics, and other technology that Moscow in turn is using to produce missiles, tanks, aircraft, and other weaponry for use in its war against Ukraine, according to a U.S. assessment. Two senior Biden administration officials, who discussed the sensitive findings on April 12 on the condition of anonymity, said that in 2023 about 90 percent of Russia’s microelectronics came from China. Russia has used the technology to make missiles, tanks, and aircraft. In addition, nearly 70 percent Russia’s approximately $900 million in machine tool imports late last year came from China.
