The paintings recall a violent past that many in east Belfast are keen to forget.

BBC: East Belfast murals show UVF men with machine guns

Hoon has said in the past that he could not recall having had any official meetings with Kelly, an expert on Iraq's WMD.

CNN: Pressure on Hoon over Kelly chat

But crude extrapolation of the past is a poor predictor of the future: recall the forecasts in the mid-1980s that Japan was set to become the world's largest economy.

ECONOMIST: When will China overtake America?

Gazza loyalists recall nostalgically that high-profile drinking binges have not impaired their man's performance in the past.

ECONOMIST: When Geri met Gazza

This may reflect actual differences in depression rates, but it could also be that people in poorer countries are for some reason less likely to recall or relate episodes of depression from their past, the authors say.

CNN: People in affluent nations may be more depression-prone