The more you dig on this family the deeper the rabbit hole goes
Neighbors to a big crime family
http://www.rferl.org/content/tsarnaev-childhood-family-kyrgyzstan-chechnya-daghestan/24963691.html
We know that Dead Bomber spent time in the North Caucasas
Uncle Ruslans former father in law - CIA operative Graham Fuller is accredited with saying this
“The policy of guiding the evolution of Islam and of helping them against our adversaries worked marvelously well in Afghanistan against the Red Army. The same doctrines can still be used to destabilize what remains of Russian power, and especially to counter the Chinese influence in Central Asia.”
Did he say it?
Don’t know yet.