Assume that the hawks get their way – that the United States does whatever it takes militarily to confront and destroy ISIS. Then what?
Answering that question requires taking seriously the outcomes of other recent US interventions in the Greater Middle East. In 1991, when the first President Bush ejected Saddam Hussein’s army from Kuwait, Americans rejoiced, believing that they had won a decisive victory. A decade later, the younger Bush seemingly outdid his father by toppling the Taliban in Afghanistan and then making short work of Saddam himself – a liberation twofer achieved in less time than it takes Americans to choose a president. After the passage of another decade, Barack Obama got into the liberation act, overthrowing the Libyan dictator Muammar Gaddafi in what appeared to be a tidy air intervention with a clean outcome. As Secretary of State Hillary Clinton memorably put it, “We came, we saw, he died.” End of story.
In fact, subsequent events in each case mocked early claims of success or outright victory. Unanticipated consequences and complications abounded. “Liberation” turned out to be a prelude to chronic violence and upheaval.
Indeed, the very existence of the Islamic State (ISIS) today renders a definitive verdict on the Iraq wars over which the Presidents Bush presided, each abetted by a Democratic successor. A de facto collaboration of four successive administrations succeeded in reducing Iraq to what it is today: a dysfunctional quasi-state unable to control its borders or territory while serving as a magnet and inspiration for terrorists.