In Britain, survivors of the July 7, 2005, subway bombings are calling for a new investigation into what the government knew about the suicide bombers before the day of the attack. Up until this week the British government had maintained the bombings came out of the blue and that intelligence officers didn’t know any of the men involved. But it was revealed on Monday — at the conclusion of an unrelated trial — that the ringleader of the subway bombing was under MI5 surveillance in 2004. In the trial, a jury sentenced five British citizens to life in prison on Monday for plotting a series of bomb attacks. The government case rested largely on intelligence gathered in what has been described as Britain’s most intensive surveillance operation ever. Investigators bugged more than 90 phone lines, sifted through 27,000 hours of video and audio intercepts and logged more than 33,000 hours watching the men.