Greek shipping companies that were forced to stop transporting Russian oil operate more than 100 tankers capable of handling nearly all oil exports from Russia’s European ports (roughly 2.4 million barrels per day). For the time being, Moscow is dealing with this by relying on its shipping companies and other firms from around the world. However, any additional tightening of the sanctions could eliminate a large portion of its massive oil exports, resulting in further skyrocketing of the price of critical commodities, creating an artificial crisis that would affect the entire world.