I was thinking if China wants to rule the world militarily then China would have to build an army of 400 million soldiers and provide AK - 47 rifle to each soldier. That would cost some $ 5 Trillion for AK - 47 alone. Add another $ 5 trillion for bullets. Now China will need battle tanks, fighter planes, navy, transport vehicles and aircraft, fuel, food, clothing for soldiers. So China will have to spend some $50 Trillion if China wants to rule the world militarily. The same applies to India.