US oil waivers that rocked market in 2018 coming back to focus

A support vessel sails alongside the crude oil tanker 'Devon' as it sails through the Persian Gulf towards Kharq Island oil terminal to transport crude oil to export markets in Bandar Abbas, Iran, on Friday, March 23, 2018. Geopolitical risk is creeping back into the crude oil market. Photographer: Ali Mohammadi/Bloomberg
A support vessel sails alongside the crude oil tanker 'Devon' as it sails through the Persian Gulf towards Kharq Island oil terminal to transport crude oil to export markets in Bandar Abbas, Iran, on Friday, March 23, 2018. Geopolitical risk is creeping back into the crude oil market. Photographer: Ali Mohammadi/Bloomberg

Breaking