KEY POINTS
  • Firms that track maritime shipments believe Iran has made its first crude delivery to Syria since the end of 2018.
  • The suspected shipment comes as the Trump administration aims to cut Iran's oil exports to zero by tightening sanctions.
  • TankerTrackers.com and ClipperData estimate about one million barrels of crude were delivered to Syria in the first week of May.
A support vessel maneuvers near 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 Mar. 23, 2018.

Tanker-tracking firms believe Iran is once again shipping crude oil to Syria, resuming the illicit trade as tensions with Washington rise and the Islamic Republic faces increasing international isolation.

An Iranian delivery of approximately one million barrels of crude was made into the Syrian port of Baniyas during the first week of May, according to TankerTrackers.com and ClipperData, two groups that follows oil vessels.