What is the real problem, here?

Seriously.

This is someone who has CLEARLY and indisputably expressed a clear intention of killing over a million human beings in what is clearly the worst instance of single-person genocide in all of human history.

There's no question they've done this, there is no doubt about his intent or will.

By that action, he's placed himself outside the realm of humanity, and possesses no claim to "civil" rights of any kind, no claim to the treatment owed to any "decent human being". Because face it: HE'S NOT.

Do whatever you want to to him to protect the human lives he's threatening. I see no problem with this. I fear far more for the basic humanity of the people tasked with obtaining the information than I do for said monster.

The only real, justifiable question here is when placing the wife and children to the task for the purpose of obtaining information from him. Are their lives, their humanity, to suffer for his monstrous nature? Unfortunately, yes, because the question of one,two, three lives, no matter how innocent, weighted against that of MILLIONS -- equally innocent -- yes, the scales tip against them.

If there was ANY question about the knowledge to be obtained, yes, you can't put that scale into play. But when you have that monster to be neutralized, yes, the scale comes into play. And the few must suffer for the clear, indisputed safety of the VAST many.