The Dollar Weapon: How America Can Cripple a Country Without Firing a Shot
How do they even do it? How did the whole world become so dependent on the American dollar?
It is one of the most extraordinary realities of the modern global economy: the United States does not necessarily need to fire a shot to exert enormous economic pressure on another country.
The reason is the extraordinary position of the U.S. dollar in global finance.
According to the Bank for International Settlements (BIS), the dollar was on one side of 89% of all foreign-exchange transactions in April 2025, up from 88.4% in 2022. The BIS also describes the dollar as the dominant currency in international banking, trade invoicing and global financial markets.
That is the real power of the dollar system.
If the United States cuts a country, company or financial institution off from important parts of the dollar-based financial system, the consequences can extend far beyond American borders. Banks, insurers, airlines, shipping companies, suppliers and other international businesses can become extremely cautious about dealing with sanctioned entities because they may themselves face U.S. sanctions or lose access to crucial financial channels.
And that brings us to Iran.
The Trump administration has dramatically intensified economic pressure on Tehran, including measures targeting Iran's aviation sector. U.S. Treasury Secretary Scott Bessent said Iranian airlines would effectively be shut out of international operations from September 23, warning that companies continuing to provide services could face U.S. sanctions. The measures can affect services such as refuelling, landing assistance, ticket sales and other airport support.
The significance is enormous.
An airline does not operate internationally simply because it owns aircraft. It needs airports, fuel, maintenance, navigation support, ground handling, ticketing arrangements, insurance and financial services. If companies providing those services believe that continuing to deal with a sanctioned airline could expose them to American penalties, many may decide that the commercial risk is simply too high.
That is how economic power can become geopolitical power.
Reports indicate that several countries have already restricted Iranian airline operations following the new U.S. measures. The United Arab Emirates, for example, suspended flights operated by Iranian airlines to and from the country, citing the U.S. sanctions. Turkey and Oman have also taken measures affecting Iranian aviation links.
But it is important to understand what is actually happening.
The United States has not physically grounded every Iranian aircraft around the world. Rather, the mechanism is the threat of secondary sanctions against foreign companies and institutions that continue providing certain services to sanctioned Iranian airlines. China and Russia, meanwhile, have continued to accommodate some Iranian flights, demonstrating that the world is not responding uniformly.
Nevertheless, the broader lesson remains striking.
A country can possess aircraft, airports, oil, factories, natural resources and millions of people, yet still find its international economic freedom severely constrained by the financial architecture surrounding the dollar.
No nuclear bomb is required.
No fighter jet needs to cross the border.
No missile needs to be launched.
Financial access itself can become an instrument of geopolitical pressure.
This is why the dollar's global role matters far beyond currency exchange. The United States' ability to impose sanctions derives not simply from printing dollars, but from the extraordinary integration of the American financial system with international banking, trade and payments.
The Iranian case therefore offers a powerful illustration of how economic interdependence can become a strategic weapon.
It also raises a larger question for the rest of the world:
What happens when so much of the global economy depends on a financial system ultimately anchored by one country's currency, institutions and sanctions regime?
Power does not always announce itself with bombs.
Sometimes, it arrives through a bank transfer that is rejected, an aircraft that cannot obtain fuel, an insurance policy that disappears, or a company that decides it cannot risk doing business with you.
That is the extraordinary power—and vulnerability—created by the modern dollar system.
And Iran is once again demonstrating just how consequential that power can become.
0 Comments