A young sniper of the Afghan National Army
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Robert Fox on Afghanistan future after UK troops leave

28 August 2012 Last updated at 13:15 BST

Afghanistan has seen one of its bloodiest 24 hours with reports that 17 people were beheaded by the Taleban, 10 Afghan Army personnel were killed, and two US soldiers were killed by an Afghan national army recruit.

The London Evening Standard's Defence Correspondent Robert Fox believes the key to Afghanistan's stability "is what happens to the armed forces and the police" and warns that "big difficulties" remain.

In a series of daily essays, the World at One examines what to expect after the US and UK armed forces withdraw by 2014, and asking how stable the country will be.