JERUSALEM, Israel -- Against the backdrop of a pending deal over Iran's nuclear program, an unprecedented meeting took place in Washington, D.C., last week. The meeting between Israel and Saudi Arabia sent one more signal of an historic geopolitical change taking place in the Middle East. At the Council on Foreign Relations, Israel's incoming director general of the Foreign Ministry, Dore Gold, met with Anwar Majed Eshki, his Saudi counterpart. These historic enemies shared an identical message: Iran is trying to take over the Middle East and it must be stopped. The meeting took place in public, but Israel and...