BTW I completely disagree with the president and whatever his motives it he framed the discussion poorly. My only problem with the crusades is was mismanaged poorly executed and it failed. The Christians did not start the war. Muslim expansionism invaded 3 of the patriarchal seas. Christians fought as all did at the time given the weaponry and their barbarism is excused on that account.
Did you just made the argument for those militants who target western interests? That is what they say is their motivation.
There is what they say and the truth.
And what is that truth?