If you are so interested, you could learn more about the entire complicated conflict. People who see this as clear cut, black and white, good vs. bad, are showing their ignorance of the complexity, and arrogance in thinking that they somehow know the problem better than the millions of people who have spent entire lifetimes trying to solve this same problem. You need to understand that if you don't find the conflict extremely complex, you are missing something. You're not doing anybody any favors or helping to solve any of the many problems by joining in with such a simplistic viewpoint.
from the article: IDF chief: Gaza war against Hamas was an 'excellent' operation