The three steps on America’s ladder of military escalation

TO PARAPHRASE AN observation attributed to Leon Trotsky, you may not be interested in the Middle East but the Middle East is interested in you. After a decade of tapering down its military presence in the region, America is back with a huge display of force. In the past few days two fighter squadrons have flown in. They follow the deployment of two aircraft-carrier strike groups, multiple air-defence systems and much aid to Israel. More units have been told to prepare to deploy.

America’s goal is to deter attacks on American interests, on Israel and to a degree on its Arab allies. But what if deterrence fails? The daunting possibilities range from attacks against American soldiers to strikes on shipping in the Persian Gulf and rocket attacks that overwhelm Israel’s air defences. Under what circumstances would America’s forces then be used? And could it be dragged into a deeper Middle East war of the kind its leaders hoped would never happen again after the hell of the forever wars in Iraq and Afghanistan?