REUTERS, New York

The dollar rose on Friday and was on course for its strongest monthly gain in ​almost a year, buoyed by safe-haven demand as the Middle East war intensifies and hopes fade for de-escalation.

The yen was particularly under pressure, falling in afternoon trading ‌to its weakest since July 2024 and raising the possibility of currency market intervention by the Japanese authorities.

Iran is expected to respond on Friday to a US peace proposal to end the war, with US President Donald Trump and senior White House officials told by interlocutors to expect a counter-proposal.

US Secretary of State Marco Rubio said that the war was expected to last weeks, rather than months, and that US objectives ​could be met without ground troops.

US consumer sentiment slipped to a three-month low in March as war-driven oil price rises weighed on the economic outlook.

Safe-haven flows underpinned the ​dollar, which has also been lifted by rising expectations for a US rate increase this year. The dollar index rose 0.3 percent to 100.17, up 2.57 percent so far in March and on course for its best monthly showing since July 2025, when it rose 3.4 percent.

“Weekend trading is also, to a certain degree, ​taking hold in terms of what you might or might not want to be long or short over the weekend,” said Marvin Loh, senior global market strategist at State Street ​in Boston. “The dollar has been pretty correlated with risk these days in the correct way.”

While senior Iranian officials said diplomacy continued, the Islamic Revolutionary Guard Corps reiterated a ban on all shipping through the Strait of Hormuz that was linked to allies of the US and Israel.