Design and implementation of the price cap on Russian oil exports
解释了2022年俄乌冲突后美国对俄罗斯石油实施的价格上限政策，与标准经济学教科书中的价格上限不同，并描述了该政策前六个月的执行情况、目标、结构及效果。
Basic economics teaches that price caps are bad – limiting the price of a good distorts demand and discourages producers from supplying the market. So why did the Biden Administration, led by Janet Yellen, the consummate economist, champion a price cap on oil from Russia after it invaded Ukraine in 2022? The answer is that this price cap, implemented for crude oil in December 2022 and oil products in February 2023, differs significantly from the standard cap discussed in introductory economics classes. This paper explains these differences and describes the first six months this policy has been in existence. We provide background on Russian oil trade and describe the goals, structure, enforcement and economics of the price cap. We review the main concerns and contrast them with the outcomes observed to date.