The U.S. administration is giving affected companies either 90 days or 180 days to wind down their interactions with Tehran before sanctions kick in again.

However, the sanctions for now only affect companies that operate out of the U.S. or have significant exposure there. The big question now is how the U.S. will treat its allies, which want to maintain the deal despite the U.S.’s withdrawal: Will it take measures against their companies if they continue to do business with Iran?

Here are six of the firms that will be hit — or not, depending on the details that are still to come.

Boeing and Airbus

Plane-makers Boeing and Airbus are probably the highest-profile casualties of the reimposed sanctions, as they had been planning to start selling aircraft to the Islamic Republic for the first time.

Boeing is of course based in Chicago, but France-based Airbus also needed its now-revoked U.S. export license because more than 10 percent of its parts are American.

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