Had you been talkin about some bomb blasts then I wanna agree with you. (because it has happened many times) However you're talking about something which nobody expected. There was no clear hint that the planes will hit the twin towers. That's not the case with something you're comparing it with. There was a clear possibility of OBL being present in Pakistan. But it looks like you don't wanna see the difference.There is very little difference - the US did in fact have intelligence of a plot, and US interests had already been attacked, so the fact that a terrorist attack occurred despite the fact that US intelligence was looking (or should have been looking) for such an attack does point to an intel failure.
Similarly, while Pakistan was looking for OBL, the widespread consensus was that he was dead or somewhere in the tribal areas. The fact that he was hiding in Abbottabad did in fact come as a surprise.
In Abbottabad? Yes it was a surprise. But in Pakistan? No. It was not a surprise. Just like its not a surprise (according to the fresh report) that the new AQ leader is there somewhere in Pakistan.
Now there is a possibility that this new leader may also be killed in a unilateral strike and then (instead of accepting the intelligence failure) again you'll start comparing it with 9/11 or Mumbai attacks.
Anyways, I just had some questions which I did ask. But nobody is interested to talk about it. Instead people want me to read other threads Lol. And people wanna talk about RAW and 9/11.