The shock! The horror!
Newsflash: The British anti-terrorism services have long known that the Tube would be a choice target for terrorists. Shit, think about London and it's the one, big - and above all, soft - target that sticks out like a sore thumb.
And forewarned, what, exactly, could Blair do? Remember, four unremarkable youths with backpacks. Thousands of them pass through the Tube every day. We're not talking about guys in robes with teatowels on their heads carrying beeping boxes with wires sticking out of the sides chanting in Arabic as they march into our subways.
Besides, the conspiracy theorists point to the fact that the company that runs security for the Tube performed evacuation exercises and drills with this scenario in mind mere days before the actual bombing as evidence that the gummint did know it was coming. So, er, they were preparing.
Or maybe we should react to every tidbit of information by strip searching everyone with dark skin who even so much as looks at a building?
Spies warned of Tube attack:
"SPYMASTERS warned Tony Blair before the July 7 suicide bombings that Al-Qaeda was planning a “high priority” attack specifically aimed at the London Tube.
A leaked four-page report by the Joint Intelligence Committee (JIC), which oversees all spying, is the first definitive evidence that the intelligence services expected terrorists to strike at the Underground."