I’ve been refraining from commenting on the Boston Marathon bombings because I feel like don’t yet have enough information. Dr Delacroix speculates here. Law professor and Russian immigrant Eugene Kontorovich has more on Chechens and Boston’s fall here.
I have found this piece by Clark over at Popehat to be the most illuminating yet. I can’t excerpt the good parts because the whole thing is really, really good.
Update: the Wall Street Journal has a great profile up on the Tsarnaev brothers.
Notes On Liberty 
True enough.
Makes you wonder what the cops made mental notes of while canvassing through everyone’s homes?
And yes, why would the Russian boys or the Saudi for that matter want to go back to a place where they were political fodder? or a political embarrassment? for The Kingdom or the Administration?
There are just way too many questions that crop up to keep up with the smoke and mirrors that we are being given visuals of.