U.S. curbs slowly crippling Russia's military - official

Russian and U.S. flags are pictured before talks between Russian Deputy Foreign Minister Sergei Ryabkov and U.S. Deputy Secretary of State Wendy Sherman at the United States Mission in Geneva, Switzerland January 10, 2022. REUTERS/Denis Balibouse

A top U.S. trade official said on Thursday that export controls placed on Russia after the invasion of Ukraine have slowly reduced the supply of materials that Moscow can use to rebuild its war machine.

The U.S. and a coalition of 37 other countries imposed unprecedented export controls on Russia over the past year in response to its unprovoked assault on Ukraine, and more actions are in the works.