Russia's vast Arctic oil business is facing major disruption from U.S. sanctions on its tankers and depots, stranding crude supplies previously snapped up by Asian buyers in storage, according to three sources familiar with its logistics.

India is now staring at the possibility of an oil shock after the U.S. decided to implement sweeping sanctions on Russia’s oil industry.

A fresh wave of U.S. sanctions against Russia’s oil industry threatened to disrupt global supplies, sending crude prices to their highest in more than four months.