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A woman in a car flashes the 'V for Victory' sign and waves an Iranian flag as people celebrate on Valiasr street in northern Tehran on April 2, 2015, after the announcement of an agreement on Iran nuclear talks. Iran and global powers sealed a deal on April 2 on plans to curb Tehran's chances for getting a nuclear bomb, laying the ground for a new relationship between the Islamic republic and the West. AFP PHOTO / ATTA KENARE (Photo credit should read ATTA KENARE/AFP/Getty Images)
A woman in a car flashes the 'V for Victory' sign and waves an Iranian flag as people celebrate on Valiasr street in northern Tehran on April 2, 2015, after the announcement of an agreement on Iran nuclear talks. Iran and global powers sealed a deal on April 2 on plans to curb Tehran's chances for getting a nuclear bomb, laying the ground for a new relationship between the Islamic republic and the West. AFP PHOTO / ATTA KENARE (Photo credit should read ATTA KENARE/AFP/Getty Images)

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    Open for business: Firms prepare to enter Iran

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Open for business: Firms prepare to enter Iran

With a path to sanctions relief in place for Iran, foreign businesses are being advised to go carefully, but to start making plans to enter this potentially profitable market. CNN's Clare Sebastian reports.

Open for business: Firms prepare to enter Iran

With a path to sanctions relief in place for Iran, foreign businesses are being advised to go carefully, but to start making plans to enter this potentially profitable market. CNN's Clare Sebastian reports.