Iran is supplying about 1.53 million barrels of gasoline and alkylate to Venezuela, according to both governments, sources and calculations made by TankerTrackers.com based on the vessels' draft levels.

The shipments have caused a diplomatic standoff between
Iran and
Venezuela and the
United States as both nations are under U.S.
sanctions.
Washington is considering measures in response, according to a senior U.S. official, who did not elaborate on any options being weighed.