The drones fired by Iraqi militia at Saudi oil facilities this week are a reminder of times when the Gulf states’ northern neighbor presented an even greater threat. On August 2, 1990, Iraqi tanks rolled across the Kuwait border. Six months later, a US-led coalition that included tens of thousands of Gulf troops forced them out. That left a political vacuum in Iraq, which Iran later filled. For Kuwait, the anniversary comes as it is attacked once more by Iran and its proxies in Iraq.