So what does he have to worry about what the British people think?

Well, I'd say Tony Blair does have to worry what the British people think. There are lots of them, of diverse origins, and one particular small subset registered a very strong complaint on July 7th.

I think I'm on fairly solid ground when I say that those home-grown suicide bombers were a consequence of Blair's pursuit of foreign policy initiatives dictated three thousand miles to his west.

He also has to worry about his own party getting rid of him, as happened with Thatcher. He's tightened up his grip on Labour to such a degree that it's a lot harder for them to stab him in the back, but it's not impossible, and he's currently about as unpopular in his own party as he is with the country as a whole. My money's on Blair not being Prime Minister by the next general election. Then it all gets to be someone else's mess.

As for the nature of the mess ...

When there's no effective outlet for political dissent, you get pressure building up among extremists until something explodes (like the London Underground bombings). Then you get a reactive wave of repression, with broad public support, to stop it happening again. Which ultimately doesn't work, because all the repressive measures achieve is to increase the pressure under which the next bunch of extremists work, raising the stakes, and giving them more targets to strike at. We're well on the way to assembling the machinery of a police state over here, and whenever anyone points this out to the government the response is "but we're only doing it to protect you -- trust us, we're honest!"