CNN reports that a “shadow fleet” of tankers is helping Russia evade Western sanctions and continue its oil exports, as more ships join the existing fleet of mysterious tankers. Estimates suggest the fleet size is around 600 vessels, or about 10% of the global number of large tankers, and numbers continue to climb. The ships are owned and operated by obscure players, often with shell companies in Dubai or Hong Kong. The expansion of the shadow fleet highlights the changes Russia’s war has brought to the global oil market, reshaping decades-old trading patterns and splitting the world’s energy system in two.