( Five minute read)
We all live on borrowed time.
National debt is one of the heavily debated topics in modern political economy.
A large borrower (like the U.S.) whose debt forms the backbone of global reserves creates a mutual dependency.
Foreign holders cannot easily dump large debt holdings without damaging their own foreign exchange reserves and export-reliant economies.
Geopolitical tensions have increasingly led nations to weaponize financial access, freezing sovereign debt assets or cutting off access to global debt settlement networks (e.g., SWIFT or international clearinghouses).
Debt isn’t inherently bad if it finances long-term productivity—such as education, research, green transition, or infrastructure—that generates more future revenue than the cost of the interest.
Countries that borrow in their own fiat currency and control their central bank face fundamentally different constraints than household borrowers or nations borrowing in foreign currencies.
For reserve-currency issuing nations, government bonds provide the essential “safe asset” that underpins global financial markets, trade settlement, and liquidity.
There are however many questions, such as.
Is the debt growing faster than the country’s economic output over time?
Is the economy grows faster than the real interest rate on debt, the debt burden can shrink naturally over time even with moderate deficits?
Is the debt held domestically or externally, and is it denominated in local currency or foreign currency?
Let’s look at the USA.
Unlike most nations, the U.S. issues debt in its own fiat currency, which serves as the premier global reserve currency.
World trade, commodity pricing, and central bank reserves remain heavily dollar-denominated.
This structural global demand allows the U.S. to absorb debt levels that would trigger currency collapses in other economies.
The U.S. national debt ( exceeds $36–$40 trillion), presents a unique paradox:
Net interest payments on federal debt reached roughly $970 billion in FY2025 and are tracking near or above $1.1 trillion for FY2026.
Annual net interest costs now rival or exceed the entire baseline defense budget (~$886–$900B).
Net interest consumes about 23% of all federal tax revenues collected.
As roughly $7 trillion in federal debt matures annually, old debt issued at near-zero rates is being replaced with issuances yielding between 3% and 5%.
This creates a compounding self-reinforcing debt feedback loop:
It is both a looming long-term fiscal trap and an unequaled economic advantage.
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Russia’s national debt stands at approximately $444 billion to $494 billion USD (roughly 34 to 37 trillion rubles).
The vast majority of Russia’s debt is held domestically due to heavy international sanctions restricting foreign borrowing.
According to International Monetary Fund (IMF) and national reporting frameworks, China’s general government gross debt is estimated at roughly $21.7 trillion, putting its debt-to-GDP ratio around 99%.
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National debt directly restricts a country’s geopolitical posture and strategic flexibility in three major ways:
Countries face severe trade-offs, with
Discretionary defense budgets are squeezed to meet mandatory interest obligations
Expanding spending on strategic priorities (e.g., naval shipbuilding, cyber defense, AI infrastructure) requires either tax increases, cuts to social entitlement spending, or further deficit spending.
High integration into foreign debt networks exposes nations to asset freezes, settlement disconnections (e.g., SWIFT), or secondary financial sanction.
When foreign states hold large portions of a country’s government debt, sudden sell-offs or reallocations can be used to destabilize bond markets or weaken currency valuations during geopolitical friction points.
When fiscal debt-to-GDP ratios exceed 100%–120%, a nation has significantly reduced “fiscal runway.”
If a major geopolitical crisis, war, or pandemic arises, borrowing heavily to fund immediate emergency responses risks triggering rapid inflation, bond market sell-offs, or sovereign credit downgrades.
Below is an explanation video on world debt.
