Zaid says he learned of the sentence from the State Department, which in turn learned of it from the Swiss government, which looks over American interests in Iran.
White, of Imperial Beach, California, went to Iran to see a girlfriend he met online and had booked a July 27 flight back home. He never returned.
Trump has pursued a maximalist campaign against Tehran that includes America's withdrawal from Iran's nuclear deal with world powers. Iran has in the past detained Westerners and dual nationals to use them as leverage in negotiations.
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