Actually trade is probably the next best thing after nuclear weapons when it comes to war deterrents. India and China for example have trade of 100 billion dollars, mostly in China's favour. Now if these two countries go to war, practically all trade would suffer, and both India and China would be a lot poorer(by about 100 billion dollars). So it is not feasible from an economic point of view. I know many members of various nationalities get off on the thought of war here on PDF (Indian, Chinese, Pakistanis, etc), but realistically there will never be an all out war between nations that have significant trade between them. There might be some tough-talking, some minor skirmishes but that is it.
Take Saudi Arabia for example, outside Pakistan they were the biggest supporters of Kashmir in the 50s through 80s. When is the last time their leaders openly talked about Kashmir against India? Why did their stance on Kashmir change? It was trade.