First learn the difference between climate and weather.
Also, even if climate change was a hoax (it isn't, although it certainly has been overexaggerated by some), I bet I could think of 1,000 other reasons why pursuing alternative energy is a good idea.
Whose side would they fight on?? or would they remain neutral??
If they did remain neutral Would they give out loans to the US like when they did with Iraq??
To North Korea??