Overview

The Reuters article dated 18‑08‑2026 reports that the U.S. dollar remained essentially flat on Tuesday, with the dollar index at 99.66 at 15:10 ET (19:10 GMT), only marginally above the flatline after a dip to a two‑month low of 99.29 in the previous session.

U.S. Dollar and Bond Market

Dovish expectations for Federal Reserve rate hikes and a moderation in a steep bond sell‑off tempered the dollar’s movement. The 30‑year U.S. Treasury yield surged to a session high of 5.335%, the highest level since June 2007, before retreating 2.6 basis points to 5.284%. The bond sell‑off persisted despite benign U.S. consumer‑price and producer‑price reports released the week before, with rising oil‑price‑driven inflationary concerns and large AI‑related bond issuances from mega‑tech firms adding to debt market stress. Longer‑dated yields have faced more pressure than shorter maturities because of their greater sensitivity to interest‑rate expectations.

Traders are awaiting the Federal Open Market Committee (FOMC) July‑meeting minutes, scheduled for Wednesday, to gauge any further hawkish commentary. Three regional Fed presidents dissented from the July decision to hold rates steady, a point of focus for market participants.

Robin Brooks, senior fellow in economic studies at the Brookings Institution, noted that the U.S. yield curve has experienced pronounced bear‑steepening since the July 29 meeting, pushing long‑term yields higher worldwide, and that the latest oil‑price spike further fuels bond market instability.

Oil and Geopolitical Tensions

Oil prices extended weekly gains, with Brent crude futures up 0.2% to $91.02 a barrel and briefly touching $92. The rise is linked to the ongoing impasse between the United States and Iran over the Strait of Hormuz. President Donald Trump asserted on Truth Social that a U.S. naval blockade of Iranian ports remains in full force, that the strait is open and operating, and that all water mines have been removed or detonated. Iranian official Kazem Gharibabadi dismissed Trump’s statements as a “delusion” that would be corrected. Iran has rejected negotiations, demanding that Washington cease hostilities on all fronts and unfreeze Iranian assets before the strait can be reopened, while also working with Oman on a management framework; Trump warned of possible military action against Oman if it interferes with U.S. efforts.

Currency Movements

The Japanese yen weakened for a fourth session in five, with USD/JPY at 159.61, relinquishing roughly half of the gains from a historic joint intervention by Washington and Tokyo at the end of July. The yen is again approaching the 160 level, a threshold that has historically triggered Tokyo’s intervention. Despite the Bank of Japan hinting at a possible acceleration of rate hikes as early as September, two‑year yield differentials and persistent carry‑trade demand have kept pressure on the yen.

The euro slipped marginally to $1.1576, and the British pound fell 0.1% to $1.3535.

Indian Rupee and RBI Actions

The Indian rupee weakened further, with USD/INR rising 0.3% to 95.839, its highest level since July 28. The depreciation reflects a challenging environment for energy‑importing emerging‑market currencies, as higher oil prices threaten to widen India’s current‑account deficit and the U.S. bond sell‑off has prompted foreign‑capital outflows.

The Reserve Bank of India (RBI) intervened in the spot market for an eighth consecutive session, selling dollars to curb excessive rupee depreciation. Additionally, the RBI unexpectedly shortened the deadline for commercial banks to utilise a discounted foreign‑currency deposit swap facility, moving the cutoff to August 31 after total inflows exceeded $50 billion.

Outlook

Market participants will monitor the upcoming FOMC minutes for any further clues on U.S. monetary policy, while oil price trajectories and geopolitical developments in the Persian Gulf remain key drivers for both global fixed‑income markets and emerging‑market currencies such as the rupee.