Hur islamisk är den Islamiska Staten (IS)?

the Qur'an contains numerous verses in which more detailed definitions are provided; the kafir is referred to as:[8]
Odious: "(Such) as dispute about the signs of God, without any authority that hath reached them. Grievous and odious (is such conduct) in the sight of God and of the Believers." [40: 35]
Mocked: "But on this Day the Believers will laugh at the Unbelievers." [83: 34]
Punished: "But ye have indeed rejected (Him), and soon will come the inevitable (punishment)!" [25: 77]
Terrorized: "[Remember] when your Lord inspired to the angels, "I am with you, so strengthen those who have believed. I will cast terror into the hearts of those who disbelieved, so strike [them] upon the necks and strike from them every fingertip."" [8: 12]
Destroyed: "Of the wrong-doers the last was remnant was cut off. Praise be to God, the Cherisher of the Worlds." [6: 45]
Slain: "You will find others who wish to obtain security from you and [to] obtain security from their people. Every time they are returned to [the influence of] disbelief, they fall back into it. So if they do not withdraw from you or offer you peace or restrain their hands, then seize them and kill them wherever you overtake them. And those - We have made for you against them a clear authorization." [4: 91]
Crucified: "Indeed, the penalty for those who wage war against Allah and His Messenger and strive upon earth [to cause] corruption is none but that they be killed or crucified or that their hands and feet be cut off from opposite sides or that they be exiled from the land. That is for them a disgrace in this world; and for them in the Hereafter is a great punishment." [5: 33]
Evil: "Say thou: 'Yea, and ye shall then be humiliated (on account of your evil)." [37: 18]
Cursed: "Accursed wherever they are found, [being] seized and massacred completely." [33: 61][9]
As the Qur'an progresses, the meaning behind the term kafir also progresses. Kafir does not change its meaning over the course of the Qur'an, but rather it accumulates meaning over time. At first, kafir undergoes a development connected with Muhammad's changing views of his opponents. More so, because the term depicts such a diverse range of behavior, kafir moves from being one of many ideas used to describe Muhammad's opponents to being the primary description. Later in the Qur'an, as kafir becomes more and more connected with shirk, the term accumulates even more meaning with the inflexibility of Muhammad's opponents. At this point in time, kafir develops into a concept in itself. Lastly, towards the end of the Qur'an, kafir begins to also signify the group of people to be fought by the mu'minīn.