Tehran International Permanent Fairgrounds A preliminary deal between Iran and world powers, which will see international sanctions lifted in return for Iranian curbs on its nuclear program, has boosted the appetite for doing business in Iran at the earliest opportunity. Some reactions: “Iran is the biggest untapped market before Mars and the Moon.” Sir Martin Sorrel of advertising giant WPP “If you think Russia was big, Iran is going to be even bigger because Iran has the financial framework and regulations. It’s a generational opportunity and a chance to make a difference.” Xanyar Kamangar, Iranian businessman and graduate of the London Business School Now some even anticipate a “gold rush” once Iran’s 77-million-strong, highly educated, consumption-savvy market opens up.