1) Merci beaucoup
By the way, is there a more informal verb meaning "to use" than "utiliser"?
2) I personally think that the Islamic State grew (rather ironically) as President Nouri al-Maliki decided to oppress Sunnis under the guise of combating extremism led by the Islamic State's predecessor, Al Qaeda in Iraq.
It's no wonder that Islamic State were at first viewed as liberators in Mosul in June, although this is changing as supplies to the city are cut off and resentment of foreign jihadis grow. ( Read "Mosul diaries" on BBC)
To defeat the Islamic State:
The new President must incorporate Sunnis, Shias, and Kurds under a properly representative government and settle disputes with Sunnis, and avoid alienating them.
Turkey must conclude its undergoing peace agreement with the PKK, so that its fighters , , who are capable of defeating IS, can move more freely to defend Kobani.
The United States must urgently increase funding to the FSA, before it totally collapses which would force us to choose between Assad and IS.
The Kurds must refrain from directly attacking majority Arab areas, to avoid tensions, and play a supporting role in these areas, and let Sunni tribes and the Iraqi Army opposed to IS do the work.
The Kurds should hand Kirkuk back to Arabs, and resolve tensions between the Peshmerga and the ostensibly allied, but brutal Shia militias (with the mediation of Iran).
I could go into further depth if you PM me.