Washington is looting Japanese consumers through a weak yen and calling it energy diversification.
Here are the numbers the Ministry of Finance released this week. Japan’s trade balance swung to a 406.9 billion yen deficit in June from a 122 billion yen surplus a year earlier — a half-trillion-yen swing in twelve months. Imports surged 25 percent to 11.3 trillion yen. The single largest driver: oil.
Japan imports virtually all of its crude petroleum. The war with Iran has disrupted vessel traffic through the Strait of Hormuz, forcing Tokyo to redirect supply lines. Japan was already tracking oil supply concerns when April exports rose nearly 15% despite them — June’s 25% import surge shows the disruption layering in was not a space-cadet forecast. The result: Japan nearly quintupled its purchases of U.S. oil compared to a year ago. Meanwhile the yen has fallen from roughly 140 to the dollar to about 163 — a currency slide that mechanically inflates the yen cost of every dollar-denominated barrel. The yen’s decline to its weakest since 1986 had already been inflating import bills before the Hormuz disruption added a second layer.
The combination produces a clean fiscal transfer. U.S. oil producers receive dollar-denominated revenue now worth roughly 16 percent more yen than it was a year ago, while Japanese consumers and businesses absorb the difference at the pump and on their utility bills.
Exports rose 19% to 10.9 trillion yen, led by semiconductor equipment shipments to the U.S. and China. That’s the dollar-denominated circuit in reverse: the same weak yen that inflates the cost of U.S. oil also inflates the yen value of semiconductors sold to the U.S. But the volume asymmetry is stark — 25% import growth swamps 19% export growth, and the net is a 407-billion-yen deficit.
The official framing calls this energy diversification. A more precise description is a forced procurement shift from open-market crude to higher-cost U.S. supply, executed under geopolitical duress and denominated in a currency whose value against the yen is being set by a monetary-policy divergence that, in effect, has produced a one-way dollar bet — the Federal Reserve’s rate path takes no account of Japan’s import bill. The diversification is involuntary. The cost is real. The beneficiary is a U.S. oil industry that did not earn this pricing power — it inherited it from the disruption of an oceanic chokepoint and from a monetary-policy divergence that has produced a one-way dollar bet.
A corrective would require two things the current architecture does not provide. One: the dollar-yen exchange rate absorbing the full cost of a dollar-denominated energy shock is a policy choice, not an act of nature. The swap lines that exist between the Bank of Japan and the Federal Reserve could likely share exactly this kind of dollar-funding pressure — they were designed for dollar liquidity crises, but the same mechanism can distribute the currency shock of forced oil-import inflation. This is not a theoretical proposition; it is a tool the institutions have and are not using. Two: a Japanese energy-supply framework that treats supply diversity as an object of long-term public investment and domestic generation capacity, not a crisis-triggered spot-buying program from whichever producer will ship. Neither is operating. Both are available.
June alone ran a 407-billion-yen deficit. Annualized at that pace, it runs into the trillions. The cumulative effect over a sustained period is not a trade statistic. It is a trillion-yen annual transfer from Japanese consumers to U.S. oil producers, conducted through the dollar-yen exchange rate and the geography of the Hormuz strait. The score is the score.