Under pressure from powerful allies in the region, Jordan is seizing on an ideological schism in its local branch of the Muslim Brotherhood as an opportunity to push for a more pro-regime movement. This month Jordan transferred official recognition of the Brotherhood, which has operated in the kingdom for 70 years, to the liberal wing of the movement. In so doing, it deprived the traditional movement of its final legal foothold in the Arab world, furthering setbacks it suffered in Egypt and the Gulf Arab states. Jordan’s move, which follows years of growing distrust of the organization, carries significant risks....