If you break it you bought it.
But the US got bored of the country they broke and split. It's really no surprise that things have not gone well. Bit of an understatement that really, I periodically look up human rights reports on Iraq and it's shocking reading. Torture is now more commonplace than it was under Saddam, Iraq rapidly became the most dangerous country in the world to be a journalist, womens rights have sprinted backwards and violence keeps increasing.
The only potentailly good news at the moment is Kurdish independance - except that they've tried to claim more territory than they should have done (typical humans, gotta screw up a good thing).