The companies hit hardest by U.S. sanctions on Iran

Aerial view of Iranian oil field
The South Pars oil field facilities in Iran. Photo: Atta Kenare/AFP via Getty Images

The U.S. exit from the Iran deal will hurt European countries, but leave room for the Chinese and Russians.

The bottom line: Last year, the U.S. exported only $140 million in goods to Iran, but the stakes are far higher for European countries. Still, if they have to choose between the $400 billion per year Iranian market and the $18 trillion per year U.S. market, they will chose the U.S., says Barbara Slavin, director of the Atlantic Council's Future of Iran Initiative.