http://rss.nytimes.com/c/34625/f/640350/s/4b98fb97/sc/7/l/0L0Snytimes0N0C20A150C110C190Cworld0Cmiddleeast0Cin0Erise0Eof0Eisis0Eno0Esingle0Emissed0Ekey0Ebut0Emany0Estrands0Eof0Eblame0Bhtml0Dpartner0Frss0Gemc0Frss/story01.htm

By the time the U.S. withdrew from Iraq, it thought it had subdued the Islamic State. The group is now on a very different trajectory.

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