Falcon Air manufactures stealth fighter jets for the United States government. The Ukrainian government wants to purchase stealth fighter jets from Falcon. Falcon agrees to sell ten stealth fighter jets to the Ukrainian government. Once the purchase is complete, the Ukrainian government fails to make the complete payment. Falcon can sue the Ukrainian government: only if the Ukrainian government voluntarily waived its sovereign immunity in a United States court, because by conducting business with a United States company, the Ukrainian government established minimum contacts only in a Ukrainian court. only if the Ukrainian government voluntarily waived its sovereign immunity. in a United States court, because by conducting business with a United States company, the Ukrainian government established minimum contacts. e only in a Ukrainian court. under no circumstances, because each nation has sovereign Immunity, which means it cannot be sued.