Brad Setser on the War in Iran and the Future of the US Dollar

What It Covers

Brad Setser, senior fellow at the Council on Foreign Relations, analyzes the Iran war's oil shock against the 1970s precedent, identifies which non-Gulf nations capture windfall revenues, and explains why dedollarization narratives misread actual global financial flows and reserve portfolio data.

Key Questions Answered

• •Oil shock magnitude gap: The current disruption removes 10–15% of global supply and 20–30% of traded oil, yet prices rose only ~50% versus the 1970s doubling or tripling. Futures markets are pricing two competing scenarios simultaneously: a rapid return to $60 oil or a sustained crisis pushing prices above $150, creating unusual price compression relative to physical disruption.
• •Petrodollar windfall routing: Gulf states — Kuwait, Iraq, UAE, Saudi Arabia — cannot capture higher oil prices because their export infrastructure is physically constrained or damaged. The actual revenue winners are Kazakhstan, Nigeria, Angola, Colombia, Norway, and North American producers, who collectively export over 25 million barrels daily and represent the largest non-Gulf production concentration globally.
• •Saudi Arabia's fiscal breakeven shift: Saudi Arabia's balance-of-payments breakeven price rose from $60 to roughly $95 per barrel under MBS-era domestic spending programs. The kingdom borrowed $100 billion in 2024 alone — the largest emerging-market borrower that year — meaning Saudi Arabia now drains the Eurodollar system rather than recycling petrodollars into it.
• •Reserve portfolios underweight dollars vs. equities: Global reserve portfolios hold approximately 57% in dollars, while standard international large-cap equity portfolios run 65–70% dollar exposure. Saudi Arabia's Public Investment Fund holds roughly 80% dollars in its international portfolio. Tracking dedollarization via reserve data alone understates total dollar exposure; equity holdings now represent a larger channel than sovereign reserves.
• •China's structural dollar demand: China suppresses yuan appreciation by intervening at roughly $100 billion monthly, converting export dollars into yuan and recycling the remainder into dollar assets. Until China restructures its currency management and domestic demand model, it remains a structural buyer of dollars regardless of geopolitical preferences, making meaningful dedollarization arithmetically constrained.