To give time for the fragile banking system to adjust, and for consumers not to feel the impact of a sharp and sudden devaluation, the government of Russia has used up one third of its reserves shoring up the ruble. Now with currency traders and others testing the limits of the new band in which the ruble is trading, a lower limit of 41 rubles against a basket of euros and dollars is eroding. Last week the rate was at a low of 36 rubles to a dollar. Foreign exchange reserves have dropped from a high of $600 billion to $385 billion. See the link to the sudden erosion of sovereign wealth funds around the world including the Gulf countries. Raising rates aggressively and tightening liquidity too much would hurt the economy, so there is a testing game between currency dealers hoping to profit from the ruble's fall and the Russian government and central bank. Memories of the 1998 collapse of the ruble are still fresh in people's minds, and the government wants to prevent anything like that happening. This has almost become a raison de etre of the Putin government, to prevent the poverty and humiliation after the collapse of the economy during that early post-Soviet period. Most of the money that the government is spending to boost the banking system and the economy is flowing into the currency market instead. Says an economist at Alfa Bank in Moscow, all the rubles out there have been converted into dollars....