From Times Online:
Dozens of Islamic extremists have returned to Britain from terror training camps in Somalia, the British security services believe.
Intelligence analysts are worried that they may attempt to launch attacks in this country or use the kudos from having trained and fought in Somalia to try to attract new recruits. The issue was raised by Jonathan Evans, the head of MI5, in his first interview last month.
In the US, the outgoing head of the CIA, Michael Hayden, has said that Ethiopia's invasion of Somalia in late 2006 “catalysed” expatriate Somalis around the world.
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My Comment: Knowing this intelligence .... one still begs an answer to the following question .... why are these people still permitted to enter the country?