Islamic ethics of war
The Prophet (may Allah bestow peace and blessing upon him) said, “Go forth in the name of Allah, fight the enemies of Allah, your enemies in Syria. If you shall find men in monasteries then do not disturb them. Do not kill women, children, or the elderly. Do not cut down trees and do not destroy buildings.” (Source: Nur Al-Yaqin by Muhammad Al-Khudayri p. 206)
This wondrous statement of the Prophet (may Allah bestow peace and blessings upon him) was the basis for a just war policy. It would also be adopted by western law as the basis for things like the magnacata, human rights and other just war policies.
Innocent civilians should not to be harmed under any circumstances. Unlike modern warfare which is the murder of civilians in their homes. The killing of non combatants is unlawful and a war crime in all classical books of Islamic law.
Treatment of non-Muslims
It took hundreds of years for Muslims to reach a significant amount in Syria, Egypt, Iraq, and so forth. Forced conversion takes no time at all!
In the early century of Islam, conversion was difficult. People had to align themselves with a Muslim tribe before being accepted! Otherwise, they were not taken seriously! The Ummayyad dynasty actually put off converts and this is historical fact!
Within the first one hundred years of Islam, the political system of Islam spread to china and to Spain. Christians in Egypt were more comfortable and happier living under the caliphate than their own Christian byzantine rulers. The majority of the people were Christians and other religious denominations. Muslims were the minority rulers but the people preferred them over their own rulers.
However, in either case, he should show his face and that proves that this is an ignoble cause, to say the least! Just for the sake of clarification that killing innocent people is unlawful and wrong especially beheading in this manner. This rebellion is actually succeeding in portraying Islam in the most evil way. Ask yourself why? They are already placing the idea that an Islamic caliphate is evil which clearly not the case is when you take an historical glance. With the weight of the western media behind the IS rebellion, everything is reported with great detail. They must be most well orchestrated rebellion movement in history! The movie Way the dog is worth watching because that is way that war is sold. Could this all be a figment of the imagination of the media? Or just pretext to invade somewhere else?
Its also strange to see some non-Muslims dressed in Muslim clothes killing people then the war mongering media slanders Islam! Some reporters said that the rebellion did not even have the Quran with them or know it when asked!
Moreover, there is a deliberate usage of this term to denigrate Muslims and Islam. Maybe that is what the financiers of these rebellion groups wanted in the first place.