They say a week is a long time in politics – and it seems that we can now apply the same maxim to financial markets because the last week has seen some fairly staggering moves. To give an idea of what has happened in the foreign exchange space – both the Swiss franc and the Japanese yen are in the 99th percentile in terms of the scope of their weekly percentage moves over the last twenty years. Japan’s Nikkei 225 illustrated a peak-to-trough decline of around 27 per cent since its peak in mid-July – falling from 42,000 to lows…