The heads of MI5, MI6, and GCHQ testified that they defend, not undermine, democracy and freedom; 34 terror plots in England have been disrupted since the London Tube bombings in July 2005; the revelations of NSA leaker Edward Snowden have helped al Qaeda; and “terrorist tourism” is a growing threat to Britain, and hundreds of British jihadists have gone to Syria and some have returned. Mohammed Ahmed Mohamed, 27, a suspected Shabaab member who is suing the government for complicity in alleged torture in Somalia in 2011, escaped in a burka from surveillance in London on Nov. 1; Ibrahim Magag, 28, another Somali terror suspect, disappeared in London last year.