Under the expropriate exception to the Foreign Sovereign Immunities Act, a plaintiff must be able to trace the expropriated property or its proceeds to a commercial enterprise operated by the defendant sovereign state in the United States. This case holds that it does not suffice merely to show that the proceeds from sale of expropriated property were commingled in a general pot with other government funds and that some money from that commingled pot was later used in a commercial enterprise in the United States.