美苏两家打不起来，就没有世界大战。小的战争不可避免，现在不发达国家之间的战争，实际上是发达国家的需要。

• If the United States and the Soviet Union don't fight each other,there will be no world war,but small wars will be unavoidable. The current wars between underdeveloped countries are actually what the developed countries need.