Oh joy...

As if more evidence of incompetence were needed, there's this:

US relied on 'drunken liar' to justify war

According to a US presidential commission looking into pre-war intelligence failures, the basis for pivotal intelligence on Iraq's alleged biological weapons programmes and fleet of mobile labs was a spy described as 'crazy' by his intelligence handlers and a 'congenital liar' by his friends.

The defector, given the code-name Curveball by the CIA, has emerged as the central figure in the corruption of US intelligence estimates on Iraq. Despite considerable doubts over Curveball's credibility, his claims were included in the administration's case for war without caveat.

According to the report, the failure of US spy agencies to scrutinise his claims are the 'primary reason' that they 'fundamentally misjudged the status of Iraq's [biological weapons] programs'. The catalogue of failures and the gullibility of US intelligence make for darkly comic reading, even by the standards of failure detailed in previous investigations. Of all the disproven pre-war weapons claims, from aluminium centrifuge tubes to yellow cake uranium from Niger, none points to greater levels of incompetence than those found within the misadventures of Curveball.