Who was in the wrong in World War 2?

Germany, Japan, and to a lesser extent Italy. The Soviet Union was from 1939-41, when they were Hitler's partner. All these waged unjustifiable wars of aggressive expansion against their neighbors. The object was to increase their own wealth by stealing that of their neighbors, and to add to their territory by taking from neighboring nations. Germany and Japan were particularly cruel, brutal and sadistic, inflicting millions of unnecessary deaths along the way. There has seldom been a war where the parties at fault are more clearly identifiable.