In 2014, a militant group calling itself the Islamic State, or ISIL, but more generally known as ISIS, burst into official and public attention with some military victories in Iraq and Syria in the middle of the year—particularly taking over Iraq’s second largest city, Mosul.
From the outset, Sens. John McCain (R-Ariz.) and Lindsay Graham (R-S.C.) have deemed the group to be an existential threat to the United States. President Barack Obama has repeatedly insisted that this extreme characterization is overblown, but he has clearly lost the debate. A poll conducted a few weeks ago asked the 83 percent of its respondents who said they closely followed news stories about ISIS whether the group presented “a serious threat to the existence or survival of the US.” Fully 77 percent agreed, more than two-thirds of them strongly.



However, although the vicious group certainly presents a threat to the people under its control and in its neighborhood, and although it can contribute damagingly to the instability in the Middle East that has followed serial intervention there by the American military, it scarcely presents an existential threat to the United States.
Actually, in fact, it seems to be in considerable decline.