President Obama has been excoriated for declaring that “we don’t have a strategy yet” for effectively confronting the Islamic State in Iraq and Syria, or ISIS. In criticizing Obama for taking too much time, Representative Mike Rogers, the Republican chairman of the House Intelligence Committee, told “Fox News Sunday” that “this ‘don’t-do-stupid-stuff’ policy isn’t working.” That sounded odd to my ear — like we should just bomb somebody, even if it is stupid. If Obama did that, what would he be ignoring?

First, experience. After 9/11 that sort of “fire, ready, aim” approach led George W. Bush to order a ground war in Iraq without sufficient troops to control the country, without a true grasp of Iraq’s Shiite-Sunni sectarian dynamics, and without any realization that, in destroying the Sunni Taliban regime in Afghanistan and the Sunni Baathist regime in Iraq, we were destroying both of Iran’s mortal enemies and thereby opening the way for a vast expansion of Iran’s regional influence. We were in a hurry, myself included, to change things after 9/11, and when you’re in a hurry you ignore complexities that come back to haunt you later.

There are no words to describe the vileness of the video beheadings of two American journalists by ISIS, but I have no doubt that they’re meant to get us to overreact, à la 9/11, and rush off again without a strategy. ISIS is awful, but it is not a threat to America’s homeland.

Second, the context. To defeat ISIS you have to address the context out of which it emerged. And that is the three civil wars raging in the Arab world today: the civil war within Sunni Islam between radical jihadists and moderate mainstream Sunni Muslims and regimes; the civil war across the region between Sunnis funded by Saudi Arabia and Shiites funded by Iran; and the civil war between Sunni jihadists and all other minorities in the region — Yazidis, Turkmen, Kurds, Christians, Jews and Alawites.