Viscount Maugham said at page 221 of the Report. " it is obvious that in many cases he will be acting 476 on information of the most confidential character, which could not be communicated to the person detained or disclosed in court without the greatest risk of prejudicing the future efforts of the Secretary of State in this and like matters for the defence of the realm It is sufficient to say that there must be a large number of cases in which the information on which the Secretary of State is likely to act will be of a very confidential nature," and Lord Wright also observed to the same effect at page 266 of the Report: "In these cases full legal evidence or proof is impossible, even if the Secretary does not claim that disclosure is against the public interest, a claim which must necessarily be made in practically every case, and a claim which a judge necessarily has to admit." In view of the fact that the detention is made in order to deal effectively with the emergency, the grounds, information and materials would in most cases be confidential and if a claim of` privilege were made under section 123 of the Indian Evidence act, it would almost invariably be held justified.