When it comes to speaking of foreign affairs, Rory Stewart is one of the few MPs who does not peddle bland abstractions. Many of his parliamentary colleagues inhabit a blah-blah land where terms such as ‘peace process’ and ‘international community’ have meaning. An upbringing in the Far East, where his father was a diplomat, as well as years spent in Iraq and Afghanistan, have given Stewart direct experience not only of nations but of town quarters, villages and individuals.