Adam v. Ward was a case heard in 1917 by the House of Lords concerning the legal theories of qualified privilege and that of the constitutional defence. Qualified privilege is "a defence to the publication of defamatory statements which may be false but which warrant protection from an action in defamation because the occasion on which they are made demands that they be made freely with the prospect of litigation removed." The constitutional defence varies from country to country in that it is based on the constitutional law of said country.