Does intervening in currency markets address the root cause of yen weakness?
Core argument: Japan’s gross debt exceeds net debt by roughly 70 percentage points of GDP.
My basic view is that intervention can’t possibly hope to stem Yen depreciation in the medium term because that is driven by Japanese government bond yields that are being capped by the Bank of Japan (BoJ) to prevent a debt crisis. Only higher yields can stabilize the Yen sustainably. Japan can’t afford those, and there’s nothing FX intervention - even with US involvement - can do to change that. So what should Japan do? Japan’s net debt is a lot lower than its gross debt. The difference is financial assets, which can be sold to pay down gross debt. Even a small sale of government assets - say ten percent of GDP - would get huge recognition in markets and would help strengthen the Yen without needing to let bond yields rise. The current political equilibrium is still one of denial on this; however, which is why, in my opinion, the Yen will ultimately resume its march towards $/JPY 180. [Ed. note] Brooks uses the older IMF-style gross/net comparison, not the revised figures - approximately 207% gross, 137% standard net, and hence a 70-point gap. Brooks does not claim all 110% is readily saleable. Rather, at least some can be sold “in fairly short order.”

