There are some interesting facts (or surmises) being pieced together resulting (in part) from the recent arrests of terrorists in London who had the poison ricin. It is now thought that the Pankisi Gorge area of Georgia was (and still might be) the heart of the problem. The Georgians said they killed all these guys last year; well, its now clear that they didnt kill all of them (or any) but let them leave. Many have headed to Europe and are well trained and organized; affiliated with al-Qaeda or Ansar al-Islam.
This will get more interesting, and possibly more clear.