The dollar index sat at 99.031 on Tuesday, May 26, nursing losses from the previous session’s peace-optimism rally that had sent oil below $100 for the first time in weeks. The euro gained to $1.16365. Dollar-yen traded at 158.95. The currency market’s reaction to Iran deal progress has been textbook risk-on: oil falls, inflation fears ease, safe-haven demand for the dollar drops, and capital rotates into risk assets and emerging markets. But the cleanest read on Tuesday’s session is that markets are pricing a probability shift, not a regime change.
YourDailyAnalysis pinpoints the core tension in the dollar’s current position, which is less about Iran than about the structural architecture of 2026 macro. On one side, peace optimism removes the principal argument for safe-haven dollar demand. On the other, the structural factors that have supported the dollar throughout 2026 – U.S. growth resilience, AI-driven inflation pressures, and a Federal Reserve rhetoric that has tilted more hawkish – do not disappear with a deal. OCBC strategists put it directly in a client note: “We still expect a slow oil unwind, even if prices fall sustainably below $100 per barrel in the second half of 2026. This suggests the USD’s terms of trade support should not fade quickly.” Their conclusion was equally direct: “There is no strong case to be bearish USD.” That is the most important sentence in Tuesday’s currency session. It tells the dollar bears why the peace trade has limits.
Charu Chanana, chief investment strategist at Saxo in Singapore, added nuance: “Markets are right to price some optimism because even a path toward reopening Hormuz lowers the extreme tail risk around oil, inflation, and global growth.” But she stopped short of endorsing a sustained dollar selloff: “I would not confuse positive negotiation noise with a durable de-escalation yet, the real test is not the headline deal, but whether tankers can move freely, insurance premiums can fall, and energy flows can normalize.” Between those two statements sits the whole dollar trade for the next several weeks. YourDailyAnalysis interprets the OCBC note as the cleaner of the two reads: the structural dollar support is not a war artefact, it is a growth and monetary policy artefact, and those do not evaporate when Hormuz reopens.
The Bank of Japan dimension runs separately but intersects with the dollar in important ways. Dollar-yen at 158.95 is below the 160 level that has historically triggered Japanese intervention, giving the BoJ some breathing room. BoJ board member Junko Koeda reiterated earlier in the week that rate rises need to continue given underlying inflation near the 2% target. A stronger yen impulse from a U.S.-Iran deal – through lower oil, lower inflation expectations, and lower U.S. safe-haven inflows – would actually serve BoJ policy goals, reducing the need for intervention. That is a second-order reason why a deal is dollar-negative versus the yen specifically, beyond the generic risk-on dynamic.
Emerging market currencies saw relief on Monday as oil dropped and risk sentiment improved. That is the genuine positive case for EM FX from a deal: lower oil reduces current account pressure on energy importers across Asia and Latin America, improving the fundamental case for holding their currencies. But the relief is conditioned on the deal actually delivering supply normalization, not just a signed agreement. The reprieve is real but conditioned on the deal actually delivering supply normalization. YourDailyAnalysis forecasts the dollar index holding in a 98 to 101 range through the end of May, with brief excursions in either direction on deal-related headlines. The next directional signal with durable implications will come from the May CPI reading in June – if core inflation stays near 2.8%, the Fed holds and the dollar’s structural support reasserts. If energy prices fall fast enough to pull headline CPI down sharply, the rate-cut probability rises and the dollar faces more sustained pressure. Neither outcome is a certainty this week. The dollar bears need oil to fall below $80 on a sustained basis, core inflation to drop toward 2.5%, and Warsh to signal a cut.
That three-part sequence is unlikely to complete by end of Q2. Reporters at Your Daily Analysis note that none of those three conditions were in place before the war began, which means even a full peace resolution only returns the dollar to its pre-war equilibrium – which itself was not a weak-dollar environment.
