The US is preparing to reshuffle top officials with responsibility for Afghanistan, expand the number of staff serving in the country, and award an additional $1bn (?870m, £620m) in assistance in a bid to re-energise its reconstruction effort, according to US and Afghan officials familiar with the plans. The policy shift, whose motto is "Accelerate Success", was a response by US State and Defense Department officials to a chorus of concern about the Afghan reconstruction process, officials said. The US government was eager to point to Afghanistan as a success story as it faced difficulty in getting the situation in...