Bessent: Disorderly Yen Moves Could Roil Global Markets
nashnova research
Treasury Secretary Bessent warned that disorderly yen swings could trigger forced liquidations worldwide, ultimately raising borrowing costs for American households and businesses — spelling out why Washington took the rare step of intervening alongside Tokyo.
What exactly is Bessent worried about?
In an August 27 letter to Senator Elizabeth Warren, Bessent made one core argument: a disorderly yen decline could force global position liquidations, with the shockwave reaching back to the United States.
This means → the yen is not just Japan's problem. Vast international funds borrow in yen to invest elsewhere — the carry trade. A violent yen move forces those positions to unwind at once, and the chain reaction can push up U.S. borrowing costs.
In plain terms = the yen is a rope tying global capital together. If it snaps, everyone attached falls.
What did the joint intervention actually do?
On July 31, the U.S. and Japan carried out a rare joint yen-buying intervention to stop a sell-off in yen and Japanese government bonds from spreading globally.
The U.S. Treasury executed the operation by using foreign-currency assets held in the Exchange Stabilization Fund (ESF) — an emergency reserve managed by the Treasury — to purchase yen.
Bessent compared the move to last year's ESF deployment to stabilize the Argentine peso, saying: "The best crisis management is making sure the crisis never happens."
Has the intervention held?
The yen briefly strengthened to 155.20 per dollar after the intervention, but has since weakened back toward 160.
Last Friday it briefly broke through 160 — a level widely seen as the threshold for another round of intervention.
This reflects a hard truth: the intervention bought time but did not reverse the yen's fundamental pressure. Markets are now testing Washington and Tokyo's resolve.
Why is the yen sliding again?
Part of the answer is Fed Chair Kevin Warsh's comments, which reignited expectations of a near-term U.S. rate hike, strengthening the dollar and weighing on the yen.
The yen had earlier hit a near-40-year low of roughly 164 per dollar; post-intervention gains are now in doubt.
This means → as long as U.S. rate-hike expectations persist, the dollar keeps pulling capital home and yen downside pressure remains — raising the odds of yet another intervention.
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