American financial markets are bracing for collateral damage as a massive unwind of the yen carry trade threatens to spill across the Pacific. Brookings Institution senior fellow Robin Brooks warns that Japan’s currency is suffering a “quiet implosion” driven by a ballooning debt crisis, rendering Tokyo’s multi-billion-dollar market interventions utterly “doomed to fail.”
The Anatomy of a Trap
Japan’s yen has plummeted to 40-year lows, hovering past 162 per dollar, with analysts projecting a further slide to 170. This structural depreciation has turned the yen into a cheap funding currency for global carry trades, where investors borrow low-yielding yen to buy higher-yielding international assets.
To prevent an unmanageable domestic debt crisis, the Bank of Japan (BoJ) is actively suppressing government bond yields to keep interest costs low on its massive debt pile, which has reached 240% of GDP. However, keeping domestic yields artificially low strips investors of incentives to stay in Japan, accelerating capital flight.
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