For all their outward differences, there always seemed to be things that linked Mahmoud Ahmadinejad and Donald Trump.A visit to the then Iranian president’s rather humble Tehran neighbourhood nearly 20 years ago highlighted cost of living problems that prefigured those facing Trump now.Amid soaring prices, the grocer at the end of Ahmadinejad’s street in the Narmak district was no longer stocking tomatoes, saying customers could not afford them and voicing a wish to close down. Shoppers at a nearby fruit and vegetable market complained at the cost of potatoes, onions and fish.It seemed to represent a failure on the kitchen...