It was a brutal and at times scary week. There are plenty of unknowns around the radiation risks tied to the Fukushima nuclear plant. But the fact remains that this nuclear crisis after the quake/tsunami shock may not deal the economy too severe a blow. If nothing else, the shock is prompting a policy response that was always lacking in Japan before: hefty fiscal spending is on the way, and the Bank of Japan has injected money into the system like never before, and via all kinds of channels. The BOJ’s response has helped to quickly stabilise funding markets and asset markets as a whole. The G7 is backing up Japan on yen intervention. Foreign institutional investors were cited in the last few days as steady buyers of Japanese equities, seeing this as an opportunity as the price-to-book on the TOPIX once again fell to a meagre 1.0 (for comparison, it is in the company of Serbia, UAE, Lebanon, Italy, Greece and Venezuela – so yes maybe cheap). From a markets point of view – a minor one in this crisis – Japan did an admirable job shoring up the markets after their were gripped by panic. Keep in mind that sharp policy responses to panics linger for a while, usually well into any recovery. Just as the Fed launched QE2 the moment the U.S. economy was picking up a head of steam, Japan may be countering an economic shock that may not be as big as feared. If so, it could be just the jolt the Japanese economy has long needed just as it was gathering momentum. All that said, the radiation risks, factory shutdowns and threat of power outages will add to the doubts about how quickly the economy will bounce back in the next few months.