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Wikileaks publishes US embassy secrets

Whistle-blowing website Wikileaks has published secret cables sent by US embassies back to the state department in Washington DC.

Some newspapers which had early access to the files have published some of the diplomatic memos, said to include criticisms of UK Prime Minister David Cameron, Italy's Silvio Berlusconi and President Hamid Karzai of Afghanistan.

Kim Ghattas reports from Washington.