Earlier quoted context omitted.
Not a whole lot of choice - you want the US to just let the targets run around? Send a strike team in each time? Drop a real bomb or cruise missile (even more civilian casualties - those weapons are larger)?
You know what? Yes. I do. Arrest them, try them, when they reach US soil and pose a risk to the security of the US. Until then, they aren't your problem.
I guess drone strikes are just a cheaper solution for that problem, with less outrage than prison camps.