“We have reports from Ukrainians that when they find Russian military equipment on the ground, it’s filled with semiconductors that they took out of dishwashers and refrigerators,” Raimondo told a Senate hearing, noting that she recently met with Ukraine’s prime minister.

U.S. technology exports to Russia have fallen by nearly 70 percent since sanctions began in late February, according to Raimondo, whose department oversees the export controls that form a big part of the sanctions package. Three dozen other countries have adopted similar export bans, which also apply to Belarus.

“Our approach was to deny Russia technology — technology that would cripple their ability to continue a military operation. And that is exactly what we are doing,” she said in a response to a question from Sen. Jeanne Shaheen (D-N.H.) about the impact of the export controls.