It is unclear how much of Tehran’s oil exports, estimated at below 2 million barrels per day, are traded or financed via Switzerland, where a third of global oil exports by volume is traded. The Swiss have long been seen as making the least effort in Europe to confront Iran’s nuclear enrichment program. The US sanctioned in 2010 Switzerland’s Naftiran Intertrade Co. a subsidiary of Tehran’s National Iranian Oil Co., for pumping “hundreds of millions of dollars” into energy projects in the Islamic Republic.
Reuters contributed to this report