The US dollar strengthens as global currencies decline amid potential military action against Iran

    by VT Markets
    /
    Jun 19, 2025

    The US dollar is gaining value against the Euro, Australian dollar, New Zealand dollar, Canadian dollar, British pound, Japanese yen, and Swiss franc. This comes as the US considers a potential attack on Iran over the coming weekend.

    Israel has issued an evacuation warning near Iran’s Arak nuclear complex. This geopolitical tension is influencing financial markets, where the ES and NQ indices are experiencing downward pressure.

    Brent Crude Oil Prices

    Brent crude oil prices are showing minor declines, with only slight movements recorded. Despite the complex international situation, the effect on Brent is not substantial.

    These events point to a clear trend in the foreign exchange markets. The dollar’s strength is fuelled not by domestic data, but by anxiety rooted in potential military activity. Markets are looking ahead and attempting to price in the consequences before action is confirmed. A sudden re-pricing of risk assets is underway, as investors seek refuge in the greenback, traditionally considered a haven during times of global uncertainty.

    With Israel adopting a more assertive posture near Iran’s Arak facility, risk sentiment remains fragile. That evacuation alert near a nuclear research site strengthens perceptions that something material could take place—possibly a direct confrontation. This pull toward safety has rippled across currencies, with the yen and Swiss franc typically benefitting during such moments. However, their weakness today underlines how dominant the dollar’s draw has become, likely due to its liquidity and central role globally.

    In equity index futures, the downward pressure in both ES and NQ shows a risk-off tone led by uncertainty rather than by poor economic fundamentals. One might argue that declines in equity futures reflect not panic but a careful repositioning—a drawdown in exposure, particularly in sectors likely to react negatively to sustained geopolitical flare-ups. For those managing leveraged exposure, volatility premiums may expand. Positioning that was predicated on relative calm has to adjust in short order.

    Energy Market Reactions

    Looking at energy, Brent’s muted reaction may seem counterintuitive at first glance. Supply disruptions in the Middle East are often followed by spikes in prices, yet we’re seeing only slight movement this time. That suggests the market foresees a short-lived event or believes physical supplies won’t be immediately affected. Alternatively, it may mean a broad risk-off trade is dampening commodity demand forecasts, especially from energy-intensive sectors. We’re reminded that oil markets are not purely geopolitical barometers—they measure demand expectations as well.

    There’s a delayed response across some asset classes that might catch out trend-followers. Some areas are moving well ahead of confirmation. Others remain oddly still. It’s this gap that introduces trading opportunity but also enhances risk. Vol pricing in options across major symbols will offer clearer direction as outright buyers and sellers of risk make their views known. The VIX will be monitored, but it is the term structure of implied volatility that may yield the more telling data.

    Powell’s earlier remarks are now largely drowned out. It seems monetary policy, at least for now, has taken a back seat. That shouldn’t surprise us—when headlines focus on missiles or troop movements, rate decisions understandably feel secondary. Still, fixed income markets will be sensitive to safe-haven flows, and Treasuries may strengthen further, heightening pressure on short trades that bet on rising yields.

    Strategically, any carry trades built around stable interest rate differentials deserve close re-evaluation right now. When fear enters the equation, the yield advantage tends to be overwhelmed by abrupt unwinding. That’s especially the case in AUD and NZD exposures, both of which depend heavily on risk appetite. Hedging remains costly, but an absence of insurance could be costlier if the weekend headlines escalate in tone or result.

    We should watch for confirmation or denial on any action by Sunday evening. Traders with weekend exposure need to consider their price gaps come Monday open. Dislocations are likelier in thin liquidity hours. With that said, the measured drop in Brent might anaesthetise some to the broader risk, but the dollar’s across-the-board strength tells a different story.

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