Beset by multiple security challenges, not least the emergence of a powerful Al Qaeda franchise, Yemen appears the antithesis of the "Weberian" state model. But while these challenges are acute, they should be seen as part of a wider "political field," dominated by powerful tribes and conditioned by patrimonial networks that have long framed the modes of political exchange between the center and periphery. This remains crucial to understanding the wider eddies of tribal politics in Yemen, and in turn, the limits of a purely military response by Washington as it seeks to confront Al Qaeda in the Arabian Peninsula.