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Taqiyya is the religiously-sanctioned doctrine of deliberate deception about Islamic matters that may be used to protect and further the cause of political Islam (i.e.,THEY CLAIM "Islam means peace," when it truly means "submission"/"to submit.")
A related term is kitman, which is defined as “mental reservation," and is used "to conceal the whole story."
Kitman is especially helpful for dawah, which is sometimes referred to as "stealth" recruitment and conversion.
Alan Note: the so called religion of peace is in reality an "ism" called Mohammadenism and is a movement not of peace but of body pieces.