In Britain MI5 is expanding substantially, from 1,800 staff in 2001 to a projected 3,500 in 2008. But the number of suspected terrorist networks is growing exponentially, roughly doubling every year since the invasion of Iraq in 2003.
Dame Eliza Manningham-Buller, MI5’s recently departed head, said in November that her service was tracking more than 1,600 known active militants (up from 250 in 2001, according to a parliamentary report). Those extremists operated in a pool of perhaps 100,000 sympathisers who, according to one poll she cited, thought the London bombings were justified. Referring to a popular British television series about MI5, Dame Eliza said: “I wish life were like