Watch: WSJ Deputy Middle East Chief on Impact of U.S. Strikes on Iran

I can report to the world that the strikes were a spectacular military success. Iran's key nuclear enrichment facilities have been completely and totally obliterated. We are now at a critical crossroads over whether this war is going to escalate and bring the United States into a war in the Middle East that could spread throughout the region.The big question now is what will Iran do. Will they decide to expand this war by hitting US assets in the region as they have threatened to do or will they back down, ...