You are 100% correct.
That's an interesting point. I don't think we need to form an EU type of organisation, but I do think we all need to be more friendly with each other for regional stability.
The religion point is interesting too. However, China and Pakistan get along well even though our religions are vastly different.
Wheras Buddhism and Hinduism are very similar (and they both originated in India). So in theory China and India should be getting along well, but because of historical conflicts (carried out by Chairman Mao) we missed the opportunity.
I think it's something to think about in the future.