Ohara, I respect your attempt to see all sides of this story. So often the conflict in Israel -Palestine inspire many on both sides of the issue to respond with hatred, intemperate language and violence. That said I have to agree with many here that the arguments made in the article you cited are fallacious. They seek to obscure the very real issue of Israel's disregard for civilian life and further seek to exagerate the danger posed to Isralis. For your consideration I'll answer with this website
http://palestinian.ning.com/forum/topics/the-other-side-of-the-story
Here you will see clear evidence of the indiscrimate terror waged by Idf.
You will see many children killed, maimed and displaced by this increasingly cynical regime. The right of a state to defend itself is mitigated by the level or volume of the threat posed to it.
Peace