US oil companies that come into these malignant countries and prop up their corrupt economies deserve to be nationalized by the tyrants who run them. Of course, the consumer pays for their losses through jacked up prices at the pump, so there is little financial risk to the oil companies.
Chevron has more dollars than sense.
This is why Yukos was nationalized in the first place, to keep its former owner from selling shares to Chevron. Now they'll have to deal with the Kremlin directly.