TLDR
- The greenback climbed to near six-week peaks amid uncertainty surrounding U.S.-Iran negotiations
- Marco Rubio, Secretary of State, indicated “some good signs” in diplomatic discussions, though significant differences persist between the two nations
- Robust U.S. economic indicators — declining jobless claims and manufacturing reaching a four-year peak — bolstered dollar strength
- The yen weakened beyond 159 against the dollar, erasing the majority of gains from Tokyo’s recent suspected market intervention
- Currencies across emerging markets, such as Turkey’s lira and Indonesia’s rupiah, experienced significant selling pressure
The greenback maintained its position near a six-week peak on Friday as mixed messages from diplomatic discussions between Washington and Tehran created volatility across foreign exchange markets.
Disputes over Iran’s enriched uranium reserves and authority over the Strait of Hormuz continued to separate the two nations. Despite these challenges, Secretary of State Marco Rubio acknowledged witnessing “some good signs” during the ongoing negotiations.
The dollar index climbed 0.17% to reach 99.37, approaching its recent high of 99.515 — a level not seen since April 7.

The euro declined 0.2% during the session to $1.1594, heading toward its second consecutive weekly decline. Sterling edged lower to $1.342, shrugging off reports that UK retail sales experienced their steepest drop in almost twelve months during April.
Positive economic data from the United States provided additional support for the currency. Initial jobless claims decreased last week, while manufacturing activity in the U.S. surged to its strongest level in four years during May.
Tony Sycamore, a market analyst at IG, noted that resolution remains distant. “I still feel like the risks are for the U.S. dollar to go higher, because I really just don’t see a way out of this situation in the Middle East without them sort of needing to be more forceful,” he said.
Yen Weakens Despite Tokyo’s Market Actions
The Japanese currency extended its decline beyond 159 per dollar on Friday, trading 0.1% weaker at 159.09. The yen has now surrendered nearly three-quarters of the gains it secured from what appears to have been recent intervention by Japanese monetary authorities.
Matthew Ryan, head of market strategy at Ebury, suggested intervention risks are increasing. “Officials have indicated that there is no real limit as to how much, or how often, they can step in to protect the currency,” he said.
Japan’s core inflation rate decelerated to a four-year low during April, creating challenges for the Bank of Japan’s monetary policy decisions. The BOJ is anticipated to implement rate increases slowly and cautiously, while other major central banks such as the European Central Bank may act more aggressively — creating a disadvantage for the yen.
On a trade-weighted measurement, the Japanese currency has fallen to unprecedented lows. While this benefits Japanese export companies, it intensifies the burden of energy imports, given Japan’s substantial dependence on foreign commodities.
Emerging Market Currencies Under Pressure
Currencies throughout emerging Asian economies faced challenges this week as global oil prices surged.
Indonesia implemented a new requirement that all natural resource exporters must keep 100% of their export proceeds in state-controlled banks beginning June 1. This policy aims to increase domestic dollar availability and provide stability to the rupiah.
Nigel Foo, head of Asian fixed income at First Sentier Investors, observed that the rupiah has been “under tremendous pressure.” He noted that Indonesia’s economic fundamentals had “clearly been deteriorating.”
Turkey’s currency plunged to all-time lows versus the dollar on Friday following an adverse court decision affecting the nation’s primary opposition political party.
Lee Hardman, currency strategist at MUFG, suggested the optimal scenario for the yen — along with numerous other currencies — would be swift resolution of the Iran situation. “Even if it just got back down into the mid 150s, that would probably be the best they can hope for right now,” he said.





