Yes. It's their idea, let them slug it out!
No. We need an army so the rich stay safe!
I've always thought leaders should, well, lead. One should never make anybody do something that they would not. Though, I make an exception for Roosevelt, for clear reasons.
World Leaders are too weak to fight.
Come on. Is the other option REALLY realistic? anyway, all I'm saying is, don't start wars in the first place so you don't have to worry.
The latest warrior-warlord would win every time since he would always be the most deadly compared to Western lawyers. A small African nation would always rule the world. And you can forget about female leaders!