From a Steve Emerson commentary on Fox News - "Both brothers had YouTube channels in the United States and in Russia. Emerson's group reviewed about half of the 22 videos posted on the U.S. channel. The videos were viewed by a small number of people. One video received 5,000 views, another just 1,000 views.
Based on the content of the videos, which feature Bin Laden, calls to kill Americans, Jews, Christians and exhortations to establish a world-wide caliphate, it is clear that these message are not directed just at Chechens. "They are directed primarily against all non-Muslims and are very similar to the Al Qaeda videos we've seen in years past."
The two brothers clearly want "to express a message that they totally sympathize with the jihadist cause. These were jihadists, they were not just Chechen separatists."
I'm sure the ongoing investigation will provide many of the answers. However, in this case it may end up being as simple as it seems.
Unless of course they were framed by the feds, the police, the media, the witnesses . . .