Barack Obama has called Afghan President Hamid Karzai to detail his plans for US troops in the country.
A senior US official said the American president phoned Mr Karzai on Tuesday about his strategy to leave 9,800 troops in the country beyond 2014.
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Labour's Chuka Umunna urged his party to unite around its new leader in an apparent offer of reconciliation to left-winger Jeremy Corbyn.
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