The dollar held near its strongest position in roughly eighteen months on Monday, with traders weighing the Federal Reserve's next move on interest rates against a backdrop of ongoing Middle East hostilities and upcoming US inflation data. Measured against a basket of six major currencies, the dollar index eased to 102.14 while holding close to the high point recorded in the previous week.

With Japan's financial markets closed for a public holiday, activity across the broader trading floor slowed considerably. Oil prices moved in both directions following attacks on Saudi Arabian energy infrastructure carried out using drones and missiles by Yemen's Houthi forces, while two separate incidents involving tankers at sea were also recorded over the same weekend period.

A ceasefire announcement covering energy infrastructure, attributed to Trump, left energy markets navigating fresh uncertainty over the Russia-Ukraine conflict. During Asian trading hours, Brent crude futures shed roughly 1%, settling at $103.55 a barrel.

Ongoing Houthi military activity in the region carries the potential to push oil prices upward and lend support to the US dollar, according to a research note from Commonwealth Bank of Australia. Reservations about any diplomatic opening between the two countries materialising that week were also part of the conversation.

Markets are watching Wednesday's US Consumer Price Index release, a data point that stands to shape how traders and analysts read the Federal Reserve's rate-setting posture ahead of its late-October gathering. In September, the Federal Reserve raised interest rates for the first time since 2023, with policymakers steering toward a reduction in inflationary pressure.

CME FedWatch pricing puts the likelihood of no rate change this month at 81%, a figure that stood at just 51% four weeks ago. A pullback in the dollar's recent upward run is plausible, Barclays analysts noted, particularly should cooler price data prompt the Federal Reserve to ease its current policy stance.

Rising government borrowing costs across global markets, alongside investor unease about the scale of sovereign debt, have left bond and equity traders navigating a period of sustained pressure. Recovering from five straight weeks of losses, the euro climbed to $1.121 against the dollar, a move tempered by ongoing budget pressures and political instability in France.

Sterling held its ground at $1.3245, while the yen absorbed a 0.14% slip in dollar value, bringing that exchange rate to 158.160. Hovering just under the 70-cent mark, the Australian dollar changed hands at around $0.6988, while New Zealand's currency held its footing near $0.5614. Trading in the offshore yuan held its ground against the dollar, with the exchange rate sitting at 6.6927.

Both Bitcoin and Ethereum posted fractional gains, with the former edging up 0.2% to settle at $83,788.50 and the latter ticking 0.15% higher to reach $2,540.08. Three data streams — inflation readings, Federal Reserve guidance, and events unfolding across the Middle East — are among the factors market participants are watching to gauge the dollar's direction.