Calm down Beavis. Chechnya is a part of Russia, and most media accounts I've read about the situation don't differentiate between the two, which illustrates that people don't care that there's a difference. It comes back to an "us vs them" scenario, nevermind that domestic terrorism is almost as common as foreign terrorism in the US.
If CNN is to be believed (questionable at best, admittedly) there is a definite connection between the brothers' actions and Chechen Muslim radicalism: http://www.cnn.com/2013/04/20/us/bro...age/index.html
Here's more information from HuffPo demonstrating a strong link between the brothers and their Islamic faith:
http://www.huffingtonpost.com/2013/0...n_3116299.html
You make a lot of assumptions about their motivations, which I think is premature (and totally you). The older brother didn't have a lot of American friends because he couldn't understand them and their way of life/thinking. He wasn't just some loser/loner, he simply had a very different mindset/worldview that made it hard to associate with others who don't share those views.
"There are no values anymore," he observed, and "people can't control themselves."
Regarding friendships, Tamerlan, who had lived in the U.S. for five years, said, "I don't have a single American friend. I don't understand them."
Maybe, but according to that report, authorities are looking at a connection between the Boston bombers and this Islamist terrorist group:
If that attack happened as recently as 2011, then I doubt they care how the world sees them or feels sympathy for their cause, they simply want to strike out at their enemies. Very similar to how other terrorist orgs conduct themselves.Imarat Kavkaz, which has its roots in the 1990s Chechen insurgency... was founded in 2007 to bring together various jihadist groups fighting to create an Islamic state in the region. The leader of Imarat Kavkaz is Doku Umarov, a veteran Chechen guerrilla who claimed responsibility for the the 2011 bombing of Moscow's international airport.