Some 14 years after the Dayton Peace accords ended the fighting in Bosnia-Herzegovina, the Muslim portion of that country reportedly serves as a base for an estimated 80 prominent Islamic terrorists. (Thanks to Jihad Watch.)
I doubt we'll hear much about this problem from the U.S. government, especially with with people like Joe Biden, Hillary Clinton and Richard Holbrooke in key positions. They advocated strong support for the Bosniac, or Muslim, side during the war, and touted the Dayton Accords as a big success. Messy stories like this don't match that narrative.
If you want to read more, I wrote a book review on Islamism in the Balkans last fall.