Iran warned the West that any move to block its oil exports would more than double crude prices with devastating consequences on a fragile global economy.

"As soon as such an issue is raised seriously the oil price would soar to above $250 a barrel," Foreign Ministry spokesman Ramin Mehmanparast said in a newspaper interview.

The U.S. Senate voted to penalize foreign financial institutions that do business with Iran's central bank -- which takes payment for the 2.6 million barrels Iran exports a day. The European Union is considering a ban -- already in place in the United States -- on Iranian oil imports. So far neither Washington nor Brussels has finalized its move against the oil trade or the central bank amid fears of the possible impact on the global economy of restricting oil flows from the world's fifth biggest exporter, Reuters reported.