Republican presidential candidate Rick Santorum summed up the Washington consensus at last week's national security debate, ''Pakistan must be our friend'' because it has nuclear weapons. America can't do without Pakistan, that is, because if Pakistan breaks up, nuclear weapons might reach the hands of terrorists. The flaw in this argument is that Pakistan itself is governed by terrorists. That is why it has been so successful. It scares its neighbors. American policy, instead, should force the burden of uncertainty onto Pakistan.
