This is what he really came for. Yes, U.S. President Barack Obama's visit in the land of Israel has already featured the Iron Dome, the Dead Sea Scrolls and elite technology and will include Yad Vashem and the tombs of Theodor Herzl and Yitzhak Rabin, and yes, it is chock-full of Shimon Peres and Benjamin Netanyahu, and characterized by an unprecedented American-Israeli hug. But the bottom line is that the...