Iran is offering to swap exports of crude oil for imports of refined fuel as some European customers struggle to find banks to process payments, a sign the Middle Eastern nation is still having difficulty regaining markets since the removal of sanctions. The National Iranian Oil Co. is resorting to barter because financial restrictions still impede trade, said three officials who asked not to be named citing company policy. Hellenic Petroleum SA has struggled to secure deliveries because banks wouldn’t process payments, said two people familiar with the matter. Iran is seeking to regain lost European markets and boost exports to Asia after sanctions were removed last month upon completion of an agreement limiting its nuclear program. It loaded its first cargo of oil to Europe since 2012 this month onto a tanker chartered to French oil company Total SA. The country plans to increase exports by 1 million […]