Three of eight importers granted waivers by Washington to buy oil from Iran have now cut their shipments to zero, a U.S. official said on Tuesday, adding that improved global oil market conditions would help reduce Iranian crude exports further.
https://www.reuters.com/article/us-iran-sanctions-usa-waivers/three-importers-cut-iran-oil-shipments-to-zero-u-s-envoy-idUSKCN1RE298