“One case in point is Petropars Ltd., which the ICIJ described as an Iranian-government- controlled intermediary between foreign companies and Iran’s oil ministry.  Through its offices in Dubai and London, Petropars was also a player in the development of Iran’s multibillion-dollar South Pars natural gas field.”“Mossack raised the alarm in an internal e-mail addressed to the firm’s “Compliance Department,” among others.  He wrote “This is dangerous! … Everybody knows that there are United Nations sanctions against Iran and we certainly want no business with regimes and individuals from such places.”

Source: Law Firm Risk Management Blog: Panama Lessons (“On business intake” or “Be careful with those clients, Eugene…”)