Suffering in an economy dragged down by years of mismanagement and the effects of international sanctions, Iran’s increasingly impoverished middle class voted in huge numbers last summer for President Hassan Rouhani , who promised to reignite growth by restoring ties with the rest of the world. But more than six months after Mr. Rouhani took office, hopes of a quick economic recovery are fading among ordinary Iranians, business owners and investors, while economists say the government is running out of cash . Although Mr. Rouhani has managed to stabilize the national currency, halt inflation and forge a temporary nuclear deal that provides some relief from sanctions, delivering on his promises of economic growth has proved far more difficult. On taking office, he discovered that the government’s finances were in far worse condition than his predecessor, Mahmoud Ahmadinejad, had ever let on. Now, with a lack of petrodollars […]