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There is no better way to take the temperature of Arab politics than to examine the state of the Muslim Brotherhood, the most powerful religiously-organised opposition movement in Egypt and the Arab world. With branches in several Arab and Muslim countries, the Brotherhood portrays itself as a more authentic, viable alternative to secular authoritarian rulers and religious extremists of the al-Qaida variety.

The recent election of a new leader, however, has utterly discredited those claims and exposed a serious rift within the 81-year-old Islamic organisation. After weeks of internal turmoil and infighting, the Brotherhood announced that it has chosen Mohammed Badie, an ultra-conservative veterinarian, as its eighth supreme leader since its founding in 1928, along with 16...