A dead person who was more desperately needed for research in other areas. Uncle Sam is already very, very good at killing people. We can't cure Alzheimers yet.
The Art of War is an ancient Chinese text written by Sun Tsu. With the Prince, Machiavelli probably wouldn't disagree because it's an issue of conventional morality, states priorities, and people are pretty much powerless to do anything over it. It will answer some, but their anger isn't sufficient enough for the prince to concern himself with.