Thank you very much for your thoughtful words. It reminds me how I was anxious to take a history course on the Crusades during my time at university. Nevertheless, the experience proved to be illuminating because even my professor (definitely not sympathetic to the Christian cause) presented facts and historical studies to demonstrate the nuance of the Crusades detached from modern views of it. First and foremost when it comes to historical controversies it is most important to take up a comprehensive study for yourself. Then, if that topic comes up in dialogue with Muslims refrain from judgement but listen in order to respond to the impressions of the person in front of you.