The 116-strong French delegation, with representatives from major companies like Total, Lafarge and Peugeot, was the largest of its kind from Europe since a landmark nuclear deal reached with the major powers in November gave Iran limited relief from crippling US and EU sanctions.
French employers' union vice president Thierry Courtaigne said the delegation, which arrived in Tehran Monday, wanted to assess the commercial opportunities opened up by the easing of Western sanctions.
Testifying before sceptical lawmakers, US Under Secretary of State for Political Affairs Wendy Sherman said yesterday Washington was warning the growing number of business delegations heading to Iran that sweeping sanctions remained in place.
"Tehran is not open for business because our sanctions relief is quite temporary, quite limited and quite targeted," said Sherman, who is overseeing the administration's cautious efforts to seal a diplomatic solution to the decade-old nuclear standoff with Iran.
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Just last month, the US Treasury announced that Luxembourg financial clearing house Clearstream Banking had agreed to pay the United States USD 152 million to settle accusations it illegally helped Iran's central bank access the US financial system in 2007 and 2008 in violation of US sanctions.
The French delegation is the latest in a string of foreign trade missions to beat a path to Tehran since the November deal.
Late last month, a large delegation visited from fellow NATO member Turkey, headed by Prime Minister Recep Tayyip Erdogan, who said the neighbouring countries aimed to more than double trade to USD 30 billion next year from USD 13.5 billion in 2013.