On Monday Shell announced that it will exit all of its Russian operations, including a major liquified natural gas plant.
This decision comes a day after rival BP abandoned its stake in Russian oil giant Rosneft. This move could cost the British company over $25 billion.
Japanese trading houses Mitsui & Co and Mitsubishi Corp said they are examining Shells announcement.
Other western companies including global bank HSBC and the worlds biggest aircraft leasing firm AerCap said they plan to exit Russia also as western governments increase economic sanctions on Moscow.