Some military takeovers are carefully orchestrated, plotted in secret for months; others are haphazard affairs conjured in the heat of the moment. The coup in Sudan last week was neither. It had looked like a strong possibility for a year and a half; then, with four weeks to go, it was heralded by a round of strenuous manoeuvring and astroturfing. Yet the timing was awkward and the execution sloppy, and now General Abdelfattah al-Burhan, the head of the junta, is facing off against intense domestic and international pressure.