Friends of Al Gore have secretly started assembling a campaign team in preparation for the former American vice-president to make a fresh bid for the White House. Two members of Mr Gore's staff from his unsuccessful attempt in 2000 say they have been approached to see if they would be available to work with him again. Mr Gore, President Bill Clinton's deputy, has said he wants to concentrate on publicising the need to combat climate change, a case made in his film, An Inconvenient Truth, which won him an Oscar this year. But, aware that he may step into the...