Just a bit unclear on this: "Canada has arrested the chief financial officer of China’s Huawei Technologies, who now faces extradition to the United States on

Just a bit unclear on this: "Canada has arrested the chief financial officer of China’s Huawei Technologies, who now faces extradition to the United States on suspicion she violated U.S. trade sanctions against Iran." What violation was really committed? Was it Huawei doing business with Iran, like selling chips/devices/etc on their product line? If it (the Huawei company) did, shouldn't everyone on the company's employ who have had a hand on the products that were provided to Iran be arrested? I look forward to having more factual information on this, rather than mere speculations on the violations that were supposedly committed.