On the news, I’ve heard Chechnya, Russia, Turkey —all of the above — as places this family might have some connection to at different points in their travels.
This social media site nails down “Islam”, but all of the above are definitely locations from which training in explosives could be gained, whether via internet or when present.
I heard the older brother was 26, that the family left overseas in the neighborhood of 2002-4. If so that makes the older brother 16-18 at the time the family departed. That’s fighting age in those countries. He easily could have been trained.
Too bad the BHO administration doesn’t have better relations with the one country that might be able to provide real insight and help with Chechen terrorists.