Attorney-General says there are provisions within the United Nations' Human Rights Convention, which justify tougher security measures against terrorism. Philip Ruddock is due to deliver a speech to the American-Australian Association in New York later today. Mr Ruddock says Article 3 of the UN Human Rights Convention specifies that governments have an obligation to protect human life, and that may come at the expense of civil liberties. The Government is already discussing ways to increase security measures, although what those measure may entail has not been revealed. The Prime Minister, John Howard, says he will be looking into the effectiveness...