The nature of a crisis determines the dollar's role. During the tariff turmoil, the dollar weakened like a normal investment asset as the U.S. became a less attractive place to do business. In contrast, during the Iran war, its safe haven properties kicked in as investors prioritized security over economic outlook.

The traditional risk-off reaction of a surging US dollar is less certain now. Unlike the 2008 crisis, where the dollar rally was driven by US entities repatriating funds, the US is now far more exposed to foreign equity outflows. In a major risk-off event, this structural shift could significantly weaken the dollar's safe-haven status.

Global demand for dollars as the reserve currency forces the U.S. to run persistent trade deficits to supply them. This strengthens the dollar and boosts import power but hollows out the domestic industrial base. A future decline in dollar demand would create a painful economic transition.

The danger to the U.S. dollar is not a dramatic replacement by the Euro or RMB, but a slow erosion of its primacy. This is visible in central banks increasing gold reserves, greater hedging activity, and China’s de-dollarization campaign. This gradual shift ultimately raises borrowing costs for the US government and American consumers.

Despite an equity rotation story away from the US that should support a weaker dollar, the currency is overshooting. This discrepancy is attributed to geopolitical uncertainties related to Iran. Without this risk premium, the dollar would likely already be weaker, indicating underlying bearish pressure on the currency.

Contrary to popular belief, a rising dollar is not always positive. In the Eurodollar market, a sharp appreciation indicates a global credit contraction. The world is screaming for dollars to service debts and fund trade but cannot get them, bidding up the price out of desperation and signaling systemic distress.

An oil shock centered on the Strait of Hormuz will cripple energy-dependent economies in Europe and Asia far more than the U.S. This economic divergence will lead to a sharp appreciation of the US Dollar against currencies like the Euro, creating a powerful flight-to-safety rally in the dollar itself.

The U.S. dollar's decline is forecast to persist into H1 2026, driven by more than just policy shifts. As U.S. interest rate advantages narrow relative to the rest of the world, hedging costs for foreign investors decrease. This provides a greater incentive for investors to hedge their currency exposure, leading to increased dollar selling.

The US dollar reached its peak global dominance in the early 2000s. The world is now gradually shifting to a system where multiple currencies (like the euro and yuan) and neutral assets (like gold) share the role of reserve currency, marking a return to a more historically normal state.