Every nation bordering Syria—Iraq, Jordan, Lebanon, Israel, Turkey—is being drawn into the conflict there. The leaders in these countries are worried, to say the least. But why is Saudi Arabia in a panic? None of the Syrian warfare is spilling over into Saudi Arabia. Iraq and Jordan serve as buffers. Still, hundreds if not thousands of Saudis (nobody’s counting) are pouring into Syria to fight with one or another of the factions trying to unseat Syrian President Bashar al-Assad. And that has Saudi leaders terrified.