I think you are mistaken about who started the current fighting. In short, among the backdrop of relative calm: 3 Israelis youths were murdered, Israel searched the West Bank, and arrested numerous Hamas individuals, among other suspects. An Arab boy was murdered, Israel arrested numerous Israeli suspects. Hamas begins firing rockets from Gaza. Then Israel began responding with air attacks in Gaza.
And who runs Gaza and the West Bank? Not Hamas.
Who sent in troops and violated the ceasefire, killing children, and precipitating this? Sure as hell not Hamas. Netanyahu.
Finally - the "unity government" you speak ill of was welcomed everywhere as a positive step towards peace - except for in Israel where it's being used as an excuse for war.
Israel's heavy-handed response to the "missing" (when in fact they already knew they were dead) children is what precipitated this.
Hamas started rocket salvos, and acknowledged such, when the airstrikes began in earnest.
Hamas themselves neither confirms nor denies it [1], so how can you claim that?
[1] http://www.reuters.com/article/2014/07/10/us-palestinians-is...