Globe and Mail: Many conflicts are caused or inflamed by water scarcity. From Chad to Darfur, to Ethiopia’s Ogaden Desert, to Somalia and its pirates, and across to Yemen, Iraq, Pakistan and Afghanistan, the conflicts lie in a great arc of arid lands where water scarcity is leading to failed crops, dying livestock, extreme poverty and desperation. Extremist groups such as the Taliban find ample recruitment possibilities in such impoverished communities. Governments lose their legitimacy when they …