"Is Niall Ferguson's Newsweek attack on Obama 'embarrassing' and 'unethical'?"

"Paul Krugman is among the intellectual heavyweights tearing apart the British historian for a 'careless and unconvincing' article."

In a forthright cover story for Newsweek magazine entitled Hit the Road, Barack, Ferguson argues that Obama has broken almost all of his campaign promises of four years ago, and attacks the US president's foreign policy, healthcare reforms and economic and fiscal policy.

To say that commentators in the US have criticised the piece would be an understatement....