"It should be understood that there is no concept of civilian (or 'non-combatant') in Deen Al-Islam. Instead, it is generally accepted, according to Ulaama, that Deen Al-Islam makes a distinction between those people who have hurma - protection (ismah al-nafs) under Shariah - and those who do not. Those who are protected are Muslims, and those of the kuffar who have a treaty, or covenant, with the Muslims, either general, as in case of Dhimam, or particular, as in the case of Aqd Al Amaan. Those who have the benefit of protection can only be killed if they transgress a limit, or limits, which Allah Subhanahu wa Ta'ala has set, defined as these are by Shariah. Thus, a Muslim who, for instance, was found guilty in a Sharia Court of zena could be killed. The asl (rule) is that the kuffar have no protection - and it is not forbidden to harm or kill them - unless they are covered by an exemption, such as Aqd Al Amaan, or unless they become Muslim, or unless they seek sanctuary."
January 1, 1970
https://en.wikiquote.org/wiki/David_Myatt