In order to get a solid government in place, Prime Minister Bibi Netanyahu needs to bribe support from various political parties! And the bribes he's forced to offer is "Ministries". Leaders of his potential partners, and members of his own Likud party are demanding that he appoint them to be a "Minister" in the new gov't. So the list of government ministries is blowing up out of proportion. And each "Minister" gets a car and driver and an office and a budget , and, and... But hey, it's the Israeli system!
BTW, the modern Hebrew word for a government Minister is the old Hebrew word for a Prince.