Aliens — Deportation — National security — Terrorism — Terrorist threat to another State — Whether capable of endangering national security of State in which alien resident — Indirect effect on national security of latter State — Effect on international relations

Human rights — Right to due process — Hearing partly in camera — Hearing before Special Immigration Appeals Commission — Deportation of alien on national security grounds — Review by courts — Limits on appellate process

Terrorism — Nature — International nature of terrorism — Whether terrorist threat to one State also indirectly endangers other States — Pakistani national in United Kingdom accused of association with terrorist acts in Kashmir — The law of England