Guardian: Driving east out of Aden, we were just a few hundred metres past the last army checkpoint when we saw the black al-Qaida flag. It flew from the top of a concrete building that had been part-demolished by shelling. From here into the interior, all signs of control by the government of Yemen disappeared. This is the region of newly proclaimed jihadi emirates in south Yemen that are run by affiliates of al-Qaida in the Arabian Peninsula (AQAP), the Yemeni franchise of the movement founded by Osama bin Laden . AQAP has existed in this ragged, mountainous terrain for years, but in the last 12 months the jihadis have moved down from the high ground to take control of cities in the lowlands. They are in the process of setting up an al-Qaida utopia here, where security is provided by jihadis, justice follows sharia law and even the administration of electricity and water supplies is governed by the emir. Azzan, a market town in Shabwa province a year a...