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With the UN's reputation in tatters and Washington in denial over Abdullah's exit, Obama must turn this round or look like a loser

In Afghanistan's disreputable 2009 presidential election, everyone's a loser. Hamid Karzai's "victory", achieved by fraud and now by default, has left him a tarnished, diminished figure. The US administration that orchestrated the whole process still lacks the credible partner in Kabul it says is essential for success.

The UN's reputation for probity lies critically wounded in the gutter, a victim of inaction and bitter infighting among officials. Nato's mission looks even more rudderless and ill-defined than before. The cause of the Afghan people, bemused and terrorised by turns, is no further...