"Despite U.S. export restrictions aimed at blocking Moscow’s access to American-made chips and other technology, Russia has been able to buy U.S-made semiconductors in transactions with small and medium-sized firms based in China, the report said, citing customs data and other open-source information. It remains difficult to precisely track Russia’s evasion and circumvention of export controls, especially transactions involving products from foreign firms that incorporate U.S.-made technology, the report said."