TAMERLAN TSARNAEV: Here's What Was Known, And Who Knew It, Before The Boston Bombing

In the aftermath of the Boston Bombing, a lot of discussion will revolve around who knew what and when regarding lead suspect, Tamerlan Tsarnaev.

For example, it came out very quickly that Russia asked the FBI to look into Tsarnaev, on suspicions that he was radical and could be dangerous.

His name has also been found on at least two watch list databases.

Hilary Sargent at Chartgirl.com made this enormous flowchart showing who knew what, and when about Tamerlan Tsarnaev prior to the attack.

She's kindly given us permission to run the chart.

You can check out her original post here >

And you'll probably want to click on the image to get taken to a super-large version of it that you can easily read.