IMF's Peter Doyle scorns its 'tainted' leadership

A top economist at the International Monetary Fund has poured scorn on its "tainted" leadership and said he is "ashamed" to have worked there.

Peter Doyle said in a letter to the IMF executive board that he wanted to explain his resignation after 20 years.

He writes of "incompetence", "failings" and "disastrous" appointments for the IMF's managing director, stretching back 10 years.