The history of Kurdistan doesn’t just tell us why it hasn’t become independent so far. It also helps to make the case for Kurdistan’s independence. It is a desire founded, not just on some passing modern whim in that direction, or on spurious claims to natural and obvious borders, but on a sustained historical focus and desire by its people, on pre-existing promises, on the need for protection from the kind of atrocities that have historically been perpetrated against the Kurds, and on the rather artificial way in which Kurdistan has been denied its existence in the past.