We can think about it this way. The United States (well, certain bureaus) do not believe that the Bill of Rights contains unalienable rights because:
1.) Foreigners ("aliens") are not 'given' what is presumably 'unalienable' to them (e.g. GitMo)
2.) Snowden Docs (in particular the US) shows how intelligence agencies will spy on one anothers' citizens on their behalf to skirt domestic law. A serious commitment to unreasonable searches and seizures would entail protecting citizens rights from foreign actors, not encouraging it. And it would also refrain from doing it to others.
3.) Fair trials are suspended where convenient, even before executions (e.g. Americans overseas, Bin Laden).
By tautological definition there are no 'extreme' circumstances under which natupal rights are no longer granted; for natural rights are not given, cannot be taken away, suspended or invalidated by geolocation.