Unfortunately Osama knows this. Bosnia is arguably the biggest Al Qaeda hotbed in Europe. During the civil war the various Balkan muslim groups were swimming in cash and munitions supplied by Bin Laden and his thugs. Nobody ever reports that. Nor do they ever report what side the Balkan muslims took in World War II. Hint - here's the flag they flew:
As your other posts have indicated, the image is not a "flag that the Balkan muslims flew during World War II." It is the insignia of the 13th Waffen-SS Division. There is clearly a difference between 21,000 Nazi soldiers and a region's Muslim population as a whole.