(NEWSER) – A new book by journalist Edward Klein says Obama has been pushed into supporting a 2016 presidential run by Hillary Clinton. Obama offered the endorsement in exchange for Bill Clinton's enthusiastic nominating speech at the 2012 Democratic convention, writes Klein in an extract of The Amateur: Barack Obama in the White House published in the New York Post. The deal was allegedly struck in spite of a history of animositybetween the two presidents. "Obama doesn’t know how to be president. He doesn’t know how the world works. He’s incompetent. He’s an amateur!" Klein quotes Bill as saying privately, via a source.