All wars in history was done for money, US and China will be no exception.
I don't think they whant a war right new but historically speaking a war is a good metod to surpass an economical depression and, at the actual speed, the planet resources will not be enought for both US and China next generation.
I hope at least the best starcraft players will not decide to try their fanatical passion on real life
(i play starcraft and i can guarantee some of them are crazy)