LONDON (CNNMoney) -- One of Europe's top chief executives has underscored just how tough it will be for the region's political leaders to salvage the Iran nuclear deal.
Speaking to CNN on Sunday, Siemens CEO Joe Kaeser said his company could not do any new business in Iran after President Donald Trump decided to ditch the deal and reimpose U.S. sanctions. Kaeser said that, based on his understanding, global companies are no longer allowed to accept new orders from Iran or else they could face targeted retaliation from the United States. Existing contracts would be fulfilled.