As horrible as this attack was, i would not call it a successfull attack. I do think our current policies have made it more difficult for them to carry out thier attacks.
Dont know about the measures in America, but anybody could pretty much strap a bomb to themselves and get on a bus/train in England. No metal detectors, sniffer dogs or frisk searchings. All you'd have to do is wear a coat to conceal the bomb and your good-to-go
Its pretty much what we've got here, except now more buildings have concrete blockades in front of them. Unless you are trying to get into a court house or some other government building, there aren't really many saftey measures. And even in those cases, if you have the proper ID (which can probably be forged) you don't have to go through the metal detectors, etc., you enter through a separate entrance, flash your ID and be on your way, no problem.
But what are we to do, short of a complete lock down?
Dear, sweet Harley Kwink...I'm madly in love with you. Marry me! We can go to Canadia. Or Boston or something. It'll be grand...You know the cookies are a given. They are ALWAYS a given. You could dump me tomorrow and you'd still get the cookies. Boston..shit, wherever dyke weddings were legalized. And where better to rub their little piggie noses in how bad they suck than right on their doorstep? What are they gonna do? Be jealous of you? Stare furiously at your tah-tahs? Not willingly give you cookies, but instead begrudgingly give you their cookies? Woman, time to wake up to the powers you wield - Uschi