“Fight those who believe not in Allah nor the Last Day, nor hold that forbidden which hath been forbidden by Allah and His Messenger, nor acknowledge the religion of Truth, (even if they are) of the People of the Book, until they pay the Jizya with willing submission, and feel themselves subdued” (Qur’an 9:29).
And Muhammad said: “Fight against those who disbelieve in Allah. Make a holy war…When you meet your enemies who are polytheists, invite them to three courses of action. If they respond to any one of these you also accept it and withhold yourself from doing them any harm. Invite them to (accept) Islam; if they respond to you, accept it from them and desist from fighting against them…. If they refuse to accept Islam, demand from them the Jizya. If they agree to pay, accept it from them and hold off your hands. If they refuse to pay the tax, seek Allah’s help and fight them. (Sahih Muslim 4294)
Not that this has anything to do with Islam. “Author’s journey inside ISIS: They’re ‘more dangerous than people realize,'” by Frederik Pleitgen, CNN, December 22, 2014:
(CNN) — Juergen Todenhoefer’s journey was a tough one: dangerous, but also eye-opening. The author traveled deep into ISIS territory — the area they now call their “caliphate” — visiting Raqqa and Deir Ezzor in Syria, as well as Mosul in Iraq.
Mosul, Iraq’s second largest city, was taken by ISIS in a Blitzkrieg-like sweep in June.
Todenhoefer managed to visit the mosque there where the leader of ISIS, Abu Bakr al-Bagdadi, gave his only public address.
And he saw the realities of daily life under ISIS, with all shops having to close for prayers in the middle of the day.
“There is an awful sense of normalcy in Mosul,” Todenhoefer said in an exclusive interview with CNN.
“130,000 Christians have been evicted from the city, the Shia have fled, many people have been murdered and yet the city is functioning and people actually like the stability that the Islamic State has brought them.”
Nonetheless, he says, there is an air of fear among residents: “Of course many of the them are quite scared, because the punishment for breaking the Islamic State’s strict rules is very severe.”…
“When we stayed at their recruitment house, there were 50 new fighters who came every day,” Todenhoefer said. “And I just could not believe the glow in their eyes. They felt like they were coming to a promised land, like they were fighting for the right thing.
“These are not stupid people. One of the people we met had just finished his law degree, he had great job offers, but he turned them down to go and fight … We met fighters from Europe and the United States. One of them was from New Jersey. Can you imagine a man from New Jersey traveling to fight for the Islamic State?”
He went on to say that one of ISIS’s main points of strength is their fighters’ willingness — even their will — to die on the battlefield….
One of the most remarkable episodes of Todenhoefer’s trip to the ISIS-controlled region came when he was able to conduct an interview with a German fighter who spoke on behalf of ISIS’s leadership.
The man — clearly unapologetic about the group’s transgressions — vowed there was more to come; he also issued a warning to Europe and the United States.
“So you also want to come to Europe?” Todenhoefer asked him.
“No, we will conquer Europe one day,” the man said. “It is not a question of if we will conquer Europe, just a matter of when that will happen. But it is certain … For us, there is no such thing as borders. There are only front lines.
“Our expansion will be perpetual … And the Europeans need to know that when we come, it will not be in a nice way. It will be with our weapons. And those who do not convert to Islam or pay the Islamic tax will be killed.”
Todenhoefer asked the fighter about their treatment of other religions, especially Shia Muslims.
“What about the 150 million Shia, what if they refuse to convert?” Todenhoefer asked.
“150 million, 200 million or 500 million, it does not matter to us,” the fighter answered. “We will kill them all.”
The interview became testy when they reached the topic of beheadings and enslavement, especially of female captives.
“So do you seriously think that beheadings and enslavement actually signal progress for humanity?” Todenhoefer asked.
“Slavery absolutely signals progress,” the man said. “Only ignorant people believe that there is no slavery among the Christians and the Jews. Of course there are woman who are forced into prostitution under the worst circumstances.
“I would say that slavery is a great help to us and we will continue to have slavery and beheadings, it is part of our religion … many slaves have converted to Islam and have then been freed.”…