sentences:  In January 2016, Maduro and Rouhani reportedly held telephone talks where "Maduro called on Rouhani to promote the adoption of measures to restore oil prices on the world market," with Maduro calling for a meeting of OPEC members to address the issue, and congratulating Rouhani on recent cancelations of sanctions.In May 2020 Iran sent five oil tankers to Venezuela under sanctions of the U.S., because Venezuela's oil refining industry collapsed because of under investment and mismanagement.The names of the ships are Forest, Fortune, Petunia, Faxon and Clavel.