This important investigation by the New York Times has many implications for Britain, which is now a half-way home to a quarter of a million Somalis.

As the FBI investigators in Minnesota correctly recognise, there is nothing to stop malign forces redirecting youths who have gone home to fight Ethiopians into committing acts of terrorism back in the US. The piece is also a very good description of how these young men are being radicalised, or rather, how they largely radicalise themselves.