A World Boycott

Raymond Learsy wants to boycott Iranian oil:

Though the United States does not currently import Iranian crude, the fungiblity of oil is such that our government espousing such a boycott would carry a meaningful impact. The cutoff of Iranian oil shipments through a buyer's boycott is entirely feasible in the structure of today's oil market. Inventories throughout the world are filled to overflowing, supertankers are loaded with 100's of millions barrels oil, lying at anchor at sea waiting for customers or storage on shore....Without the income from oil, Iran's dictatorship will be increasingly vulnerable. It is long past time that the world draws the line on the political and ethical perversion imposed by those who control the supply of oil. It would be a significant step in breaking oil's grip on our future and an enormous gesture of support to Iran's brave people.

Getting nations such as Russia and China to agree to this is going to challenging, to say the least.