Tense wait for oil market as Iran sanctions too close to call

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

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