from Zero Hedge:
The half-life of central bank interventions is getting shorter and shorter. After Shirakawa decided to show the Fed who is boss, only to be met with the biggest beatdown the dollar has experienced since March, tonight the BOJ decided to show Bernanke how it's done. Too bad the idiots at the BOJ have learned nothing from the SNB's Hildebrand, who was last seen cowering in a fetal positions, underneath his desk. After surging by 100 pips post the second intervention in a row, the "wolfpack" is back, and the yen has retraced more than half it losses in under 2 hours. This pathetic attempt to weaken its currency has just cost the BOJ another few trillions yen, while the end result is the same: a Japan whose export economy is about to be crushed, and a central bank president who will now be forced to join the ranks of the unemployed within a month.