Sanctions imposed by the United States have long made it a bother to use credit cards in Iran. As a convenience to visitors annoyed by having to lug wads of cash, Iran's savvier carpet dealers and hoteliers have evaded the blockade by collecting credit-card charges overseas, in places such as Dubai, and then wiring the funds to their local accounts.rnThat neat trick has now grown trickier. Complying with recently tightened international sanctions, financial regulators in the United Arab Emirates (UAE), which includes Dubai, have frozen dozens of Iranian bank accounts and clamped strict controls on currency transfers to the Islamic Republic.
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