Six concepts that explain how the global economy actually works. No economics degree required.
Why oil is priced in dollars
After World War II the US struck a deal with Saudi Arabia: sell oil exclusively in dollars, and America guarantees your security. Every other major producer followed. The result: any country that needs oil — which is every country — needs dollars first. This created permanent global demand for USD that has nothing to do with the US economy itself. It's the foundation of American financial dominance and it's been in place for 80 years.
The 1974 agreement wasn't just about currency — it was a comprehensive security-for-denomination arrangement. Saudi Arabia would recycle petrodollars into US Treasury bonds, funding American deficits. The US would provide military protection and weapons sales. This created a self-reinforcing system: dollar demand created dollar strength, which made dollar-denominated assets attractive, which drove more dollar demand. The mechanism persisted through multiple oil crises, Gulf Wars, and 9/11 because both parties benefited. What's changing now is that Saudi Arabia's security calculus has shifted — China is their largest customer, and Beijing is offering different terms.
When the US Federal Reserve raises interest rates, money flows back to America chasing yield. Currencies worldwide weaken against the dollar. For countries that import oil — priced in dollars — their energy bills just went up. For countries with dollar-denominated debt — most of the developing world — their repayments just got more expensive. The Fed made a decision about American inflation. Lagos, Jakarta, and Buenos Aires absorbed the shockwave. Nobody voted on that.
The transmission mechanism is brutally simple. Higher US rates make dollar assets more attractive → capital flows to USD → other currencies depreciate → imports become more expensive → inflation rises abroad → local central banks raise rates to defend their currencies → economic growth slows or reverses. This is why a Fed decision in Washington can trigger protests in Colombo. The alternative — not raising rates to match the Fed — means capital flight and potential currency collapse. Both paths hurt. That's the dollar trap.
Some currencies move with oil prices rather than against them — because their countries export enough oil that their entire economy rises and falls with the barrel price. Canada, Norway, and Russia are the clearest examples. When oil drops, their currencies typically drop with it. When oil surges, they strengthen. Norway manages this cleanly through a sovereign wealth fund that absorbs the volatility. Russia managed it until sanctions broke the transmission mechanism. Canada lives somewhere in between, pulled between oil exports and deep US economic integration.
Norway's Government Pension Fund Global — commonly called the oil fund — is now worth over $1.7 trillion, making it the world's largest sovereign wealth fund. It owns roughly 1.5% of all listed stocks globally. This gives Norway extraordinary fiscal flexibility: when oil drops, they can maintain spending from fund returns rather than cutting budgets or raising rates. Russia attempted a similar approach with the National Wealth Fund but accessed it extensively during 2022-2024 sanctions. Canada's oil sands economy is more integrated with US industrial demand, so CAD correlates with both WTI prices and general North American economic health.
Developing countries borrow in dollars because lenders demand it — their own currencies aren't trusted as stores of value over 20-year loan horizons. So they earn in local currency, owe in dollars, and buy commodities priced in dollars. When the dollar strengthens they get squeezed from every direction simultaneously: imports cost more, debt costs more, and capital flees to US assets. This isn't a bug in the system — it's how the system works. Breaking out requires either significant domestic financial development or finding alternative lenders, which is exactly the opening China exploited with Belt and Road.
The mechanism creates a negative feedback loop that's nearly impossible to escape alone. A country borrows $1B at a 5% rate when their currency trades at 100:1 USD. If their currency depreciates to 150:1, they now owe the equivalent of $1.5B in local terms — plus interest. They need dollars to pay, which means selling local currency, which pushes it down further. This is why countries like Sri Lanka and Zambia defaulted in 2022-2023. China's alternative — yuan-denominated loans with different collateral structures — doesn't solve the fundamental problem but does offer a different creditor with different political interests.
China wants the yuan to do what the dollar does — be the currency the world uses to settle trade and hold savings. The advantages are enormous: borrow cheaply, run deficits freely, and weaponize access to your financial system. China has built the infrastructure: a SWIFT alternative (CIPS), yuan-denominated oil contracts, Belt and Road loans in yuan, and aggressive gold accumulation. The obstacle is self-created — a truly global reserve currency requires open capital flows, and China controls capital flows tightly to maintain domestic stability. Until they solve that contradiction, the yuan remains a regional player with global ambitions.
CIPS (Cross-Border Interbank Payment System) processed approximately $14 trillion in 2024, up from $4 trillion in 2019. It's not a SWIFT replacement but a parallel track that allows transactions to bypass Western banking infrastructure entirely. China's yuan-denominated oil futures in Shanghai launched in 2018 and now represent meaningful volume, though still dwarfed by WTI and Brent. The fundamental tension is that reserve currency status requires that foreigners can freely buy, sell, and hold your currency — which means accepting less control over your own financial system. Beijing wants the status without the openness. The Belt and Road approach attempts to build a yuan zone through bilateral relationships rather than global markets.
The dollar's dominance isn't ending — it's fracturing. For 80 years nearly every country kept dollar reserves, settled trade in dollars, and borrowed in dollars because there was no alternative and no incentive to find one. That calculus is shifting. Not because the dollar is weak, but because the risk of dollar dependence became visible the moment the US froze Russia's reserves overnight in 2022. Every finance minister on earth watched that and quietly asked the same question: are we next? The map shows who's already moving and who's still locked in orbit.
The 2022 Russia sanctions were unprecedented in scope — roughly $300 billion in central bank reserves frozen within days. The message was unmistakable: dollar reserves are not truly yours if Washington decides they're not. This created asymmetric incentives: countries with any reason to worry about future US relations began accelerating diversification, while traditional US allies saw no reason to change. The result is a fragmentation, not a transition. Some trade now settles in yuan, some in euros, some in local currency pairs. The dollar remains dominant but less exclusively so. Even a shift from 60% to 50% of global reserves would represent a structural reduction in US financial leverage — and the current trajectory suggests that's plausible by 2035.