P204 ORACLE 204 Sat24 Sep ITN 2100:01   OWEN APPEALS FOR  UNITY ON DEFENCE SDP leader Dr David Owen has given a clear warning that the Alliance must have an agreed defence policy before the next general election. He told the Liberal Assembly in Harrogate that the Parties had to "set our sights on the future, starting to forge a security policy for the 1990s". But he added that the Alliance had to make some tough, short-term decisions on the deployment of American Cruise missiles in Britain. And in a warning to unilateralists in the Liberal Party he said Labour's non- nuclear defence policy had cost them "millions of traditional voters".