Russia seizes and wipes out Exxon’s stake in the Sakhalin 1 oil venture with no chance for XOM to sell or market their part of the operation there.

Putin has given XOM’s share to a Russian company.
XOM may have recourse in World Court as was done with Venezuela and Iran by them and others who’s assets were seized by host nations.
WSJ

Yet Another example of Putin’s cancellations of Russian obligations and ursurping of signed contracts.