P204 ORACLE 204 Sun15 Mar ITV 2140:01   SEX ROG ENVOY 'SECURITY RISK'  The unnamed diplomat at the centre of the child sex row must be a security threat, an MP has claimed. Tory MP Geoffrey Dickens said: "When you get a senior man of this stature involved in something of this kind then he just has to be a blackmail risk." The diplomat was mentioned only as a "senior civil servant" in last week's Paedophile Information Exchange trial. Mr Dickens repdated his threat today to n—ld the envoy. The MP wants the Home Secretary to answer allegations of an establishment cover-up of the affair.