AnnO'Neemus
Is so vanilla
It's hard to know who or what to believe any more.
The US has had North Korea on its axis of evil for some time now, and given its gungho attitude towards weapons of mass destruction, this could have been the publicity coup that both North Korea (think you can boss us around and tell us not to go nuclear? yah boo to you! *Kim Jong-il sticks two fingers up to US*) and the US (see, we told you they were the bad guys, let us at 'em!) wanted.
But where would it have gone from there?
The US has kind of backed itself into a corner with all the stuff over Iran going nuclear, and threatening to take action against Iran. So it would have seemed majorly hypocritical to have not taken against North Korea whilst still pursuing the hard line against Iran. But the US can't take any action whatsoever against North Korea because they are too overstretched militarily in the Middle East (and in any event, I'm guessing North Korea isn't one of the world's significant oil exporting nations).
So, who benefits from this latest news?
Well, the US can turn around and say: we know we said they're scary, but actually they're quite incompetent really, we don't have to be *that* worried about them, it's still Eye-ran that we need to worry about.
By saying it wasn't actually a nuclear test, or that it was a failed one, it lets the US off the hook, they don't have to put up or shut up as they would have had to do if it were confirmed as a successful nuclear test.
The US is like the playground bully who's had his bluff called, and is now trying to bluster its way out of a stand off while saving face.
The US has had North Korea on its axis of evil for some time now, and given its gungho attitude towards weapons of mass destruction, this could have been the publicity coup that both North Korea (think you can boss us around and tell us not to go nuclear? yah boo to you! *Kim Jong-il sticks two fingers up to US*) and the US (see, we told you they were the bad guys, let us at 'em!) wanted.
But where would it have gone from there?
The US has kind of backed itself into a corner with all the stuff over Iran going nuclear, and threatening to take action against Iran. So it would have seemed majorly hypocritical to have not taken against North Korea whilst still pursuing the hard line against Iran. But the US can't take any action whatsoever against North Korea because they are too overstretched militarily in the Middle East (and in any event, I'm guessing North Korea isn't one of the world's significant oil exporting nations).
So, who benefits from this latest news?
Well, the US can turn around and say: we know we said they're scary, but actually they're quite incompetent really, we don't have to be *that* worried about them, it's still Eye-ran that we need to worry about.
By saying it wasn't actually a nuclear test, or that it was a failed one, it lets the US off the hook, they don't have to put up or shut up as they would have had to do if it were confirmed as a successful nuclear test.
The US is like the playground bully who's had his bluff called, and is now trying to bluster its way out of a stand off while saving face.

although one official quoted by the Associated Press said the results could indicate a "nuclear fizzle", rather than a full test.