Here is my opinion:

I think waterboarding is completely acceptable. I would have no problem adding it to our system of interrogation.

Drones. I am very apprehensive about using them.

I do not relish the idea of people sitting in front of a screen and using hand controls or whatever they use, to destroy life and property. There is something inhuman about the whole thing.
Killing by remote control to me seems too sterile, at least on one end of it.