The individual in international law — In general — Human rights and freedoms — Detention without trial — Detainee held incommunicado — Inhuman and degrading treatment — Detainee held for one month after release ordered — Habeas corpus not available — International Covenant on Civil and Political Rights — Optional Protocol — U.N. Human Rights Committee — Procedure — Findings of fact in absence of evidence from State Party — Whether derogations from Covenant justifiable