I wish I could do something about that. I really, really, do. I'm the Doctor, it's my job to save people and protect them and if I can stop the humans from mucking things up among themselves then I'll take that chance.

[ But the Doctor's fought in enough wars and worked in enough military organizations to know that's a lot harder than it looks. ]

But I'm not Santa Clause, you know. I can't do everything, especially not when I'm stuck like this. [ Stuck on stupid Earth with the stupid humans without his stupid TARDIS. ] I do what I can and this is what I can.