This article further reinforces the point that Islam is mental disease. In the Islamicversion of psychosis, it is perfectly acceptable to conquer any land ruled by the infidels without repercussion or reprisal. However, if the infidel should take the land back, or a bigger, badder infidel come along, then the poor Muslims must stew on, carry grudge, even if it occurred several hundred years ago. Most Muslims see no problem with the Islamic "Crusade" on the Persian, Byzantine and Hindu empires and their subsequent colonization of each. However, when the European infidel arrived to colonize them, well, gosh darnit, they have "grievances", they have been "humiliated", and the only remedy for it is jihad.
Perfect! Kinda like liberalism :)