Fact-checking the VP debate between Vance and Walz

"But experts say that even if Trump had been reelected, he would have had trouble keeping sanctions from eroding. In particular, China has become adept at evading U.S. sanctions by arranging for many buyers of Iranian oil to be small, semi-independent refineries known as “teapots.” Such entities accounted for about one-fifth of China’s worldwide oil imports, according to Reuters. “With their small size and limited business operations, teapots are hard to uncover and not exposed to the U.S. financial system,” according to a report by the advocacy group United Against Nuclear Iran."