This final note on the way out, which comes with the observation that Monday the United Nations Security Council approved the nuclear deal with Iran that was announced last week.

Much has been made, rightly, of the business opportunities that will come with fully opening up a market of 80 million people to the global economy.

McDonald’s isn’t waiting around.

Should you be the entrepreneurial type, there’s a form on its corporate website where you can fill out an application to open a Golden Arches franchise in Tehran.