How can we stop war and conflict?

Other way around. Rich countries loot and pillage the weak and the poor.

Well there is small chance that next war China or Russia could get US in big war.

Look at China and Russia today trying to make land grabs and tensions in water dispute and such with the US Navy.

This also very scary and would be worse than Iraq and Afghanistan. A war with Iraq and Afghanistan would be very easy for the US. A war with China and Russia there is good chance the US may lose the war.

Antipsychotics for everybody!

Somehow you snuck ‘weak’ in there.
There’s enough examples in history of poor nations plundering or conquering wealthy ones.