Are there good sides in a war?

The belief that they are no sides in a war is very popular.
Many do believe that war is bad, no matter what it is fought for.
Actually, for the ancients, a war was the last resort.
 They did not spend their time to fight all the time as we think.
Definitely, I have to give you credits when you say that some counties foreign politics are the cause of World War 2.
 This is verified.
 Moreover, I believe it is true.
Guess what? Those countries are still doing the same thing nowadays.
 Hitler is no more and found Putin.
They are pushing him like never. However, no worries. The world has changed and gradually our view of war will change as well.