Barack Obama has been warned by the CIA that British Islamist extremists are the greatest threat to US homeland security.
American spy chiefs have told the President that the
CIA has launched a vast spying operation in the UK to prevent a repeat of the 9/11 attacks being launched from Britain.
They believe that a British-born Pakistani extremist entering the US under the visa waiver programme is the most likely source of another terrorist spectacular on American soil.
Intelligence briefings for Mr Obama have detailed a dramatic escalation in American espionage in Britain, where the CIA has recruited record numbers of informants in the Pakistani community to monitor the 2,000 terrorist suspects identified by MI5, the British security service.
A British intelligence source revealed that a staggering
four out of 10 CIA operations designed to thwart direct attacks on the US are now conducted against targets in Britain.
And a former CIA officer who has advised Mr Obama told The Sunday Telegraphthat the CIA has stepped up its efforts in the last month after the Mumbai massacre laid bare the threat from Lashkar-e-Taiba, the militant group behind the attacks, which has an extensive web of supporters in the UK.
The CIA has already spent 18 months developing a network of agents in Britain to combat al-Qaeda, unprecedented in size within the borders of such a close ally, according to intelligence sources in both London and Washington.
Bruce Riedel, a former CIA officer who has advised Mr Obama, told The Sunday Telegraph: "The British Pakistani community is recognised as probably al-Qaeda's best mechanism for launching an attack against North America.
The British official said: "The Americans run their own assets in the Pakistani community; they get their own intelligence.There's close cooperation with MI5 but they don't tell us the names of all their sources.
"
Around 40 per cent of CIA activity on homeland threats is now in the UK. This is quite unprecedented."
Oh look more "Religious Goofy-ness" 
