Corrupt and repressive regimes have a blanket suspicion of all aid agenciesWhen Pakistan’s rulers look east, they see a nuclear-armed adversary in the shape of India. When they look west, they must contend with al-Qaeda, the Taliban and civil war in Afghanistan.So you might be surprised to learn that Save the Children apparently ranks among this forbidding array of security threats. Last week, the charity’s office in Islamabad was shut down. Radical madrassas in Pakistan’s capital are often treated with remarkable lenience, but the authorities found time to paralyse the work of an organisation which helps four million of the country’s children.Chaudhry Nisar Ali Khan, the Interior Minister, fulminated that Save the Children and other aid agencies were “workin