Veteran investor and author Doug Casey says the United States is “at the edge of a precipice” as soaring interest costs, mounting government liabilities and widespread unproductive borrowing push the global financial system towards a period of severe instability.
Speaking on The David Lin Report (TDLR), the “Crisis Investing” author argued that the structure and scale of U.S. government borrowing now pose a systemic risk, claiming about $15tn of an estimated $40tn federal debt pile must be refinanced in the next 12 months.
Casey warned that this heavy refinancing schedule leaves Washington highly reliant on continued demand for U.S. debt at a time when borrowing costs are rising and budget deficits are already close to $2tn a year.
Refinancing strain and no “good” policy choice
Host David Lin cited an estimate suggesting that every one-basis-point rise in the average interest rate on U.S. government debt adds roughly $3.9bn in annual interest payments. Sustained higher Treasury yields, Casey said, would therefore deepen the deficit and tighten the squeeze on public finances.
He argued that the Federal Reserve now faces what he sees as a damaging dilemma. Keeping rates higher for longer, he suggested, risks triggering defaults among borrowers unable to roll over their debts. Cutting rates, by contrast, could fuel fresh borrowing and undermine the value of the currency.
“I frankly don’t see any way out,” Casey told Lin. “I see we’re at the edge of a precipice at this point.”
In Casey’s view, the United States will ultimately deal with its debt burden either through an outright default or, more plausibly, by allowing inflation to erode the real value of outstanding obligations. He called for deep reductions in military spending, the sale of federal assets and substantial reforms to entitlement programmes, while conceding that such steps are politically unlikely.
“Living above our means”
Casey extended his concerns beyond the federal balance sheet, highlighting around $1.5tn in student loans and a comparable volume of auto debt in the United States. He described these as largely financing consumption rather than the creation of productive assets capable of generating future income.
He argued that much of federal spending suffers from the same structural problem. Social Security, Medicare, Medicaid, defence outlays and interest payments, he said, absorb the majority of the budget. These commitments may meet existing promises but, in his view, do not necessarily fund new production that would help service an expanding debt load.
“We’ve been living above our means,” Casey told Lin, adding that he expects a lower standard of living over time in the United States, Canada and Europe if current patterns continue. He stressed that this is his assessment rather than a formal consensus forecast, but said it reflects growing unease about governments repeatedly rolling over old debts instead of reducing them.
Drone warfare and the cost gap in modern conflict
The conversation also examined how cheaper unmanned weapons are altering the economics of warfare. Casey pointed to what he sees as a widening cost imbalance between highly sophisticated defensive systems and relatively inexpensive offensive drones and missiles.
He cited Patriot missiles costing about $5m each and Tomahawk missiles at around $3m, contrasting them with Iranian-designed Shahed drones that may cost as little as $30,000 per unit. In his view, this disparity enables weaker or less wealthy forces to launch large numbers of low-cost drones or missiles, forcing richer opponents to expend far more expensive interceptors.
Casey suggested this trend is reducing the strategic value of aircraft carriers and some advanced fighter programmes when faced with swarms of cheaper unmanned systems.
“The wave of the future is drones,” he said, pointing to their extensive use in the Russia-Ukraine war and around key Middle Eastern shipping lanes.
He argued that the importance of drones lies not only in their lower price but in how they are produced and deployed. Manufacturing can be decentralised, losses are easier to replace, and massed deployments can overwhelm defensive systems designed for smaller numbers of high-value threats. He believes this dynamic is shifting military power towards states and armed groups able to build simple systems at scale.
Oil, conflict and energy markets
Despite recent softness in crude prices, Casey said he remains positive on the broader energy sector. He argued that tensions involving Iran, Israel and the United States are unlikely to fade, while continued threats near the Strait of Hormuz and Bab el-Mandeb keep vital shipping corridors exposed to potential disruption.
Casey estimated that the marginal cost of oil production globally supports a price near $80 a barrel, while acknowledging that expenses vary considerably by field, jurisdiction and operating environment. He told Lin he prefers investing in oil and gas companies outside the Middle East rather than taking positions directly in futures markets.
“I think that war in that part of the world is basically a permanent feature at this point,” he said.
He suggested that even temporary ceasefires are unlikely to remove the longer-term risk premium attached to potential production outages, higher shipping insurance, and possible interruptions to tanker traffic.
Gold, mining and investment positioning
Turning to precious metals, Casey argued that gold at about $4,000 an ounce no longer offers the same deeply undervalued speculative opportunity it did when the price was $35 in 1971. He still regards gold and silver as important holdings, but believes that shares in mining companies may offer greater upside.
He estimated industry-wide all-in sustaining costs at roughly $1,700 per ounce, leaving producers with unusually wide margins at current gold prices. However, he emphasised that mining remains a challenging business, citing exploration uncertainty, high capital requirements, regulatory burdens, political risk and lengthy development timelines.
Casey said he is heavily invested in mining and energy firms because, in his view, their earnings have improved more quickly than investor appetite for the sector.
AI’s promise – and potential investment pitfalls
Casey described artificial intelligence as a transformational technology but questioned whether that justifies lofty valuations across every company linked to the sector.
“Artificial intelligence is changing the world around us,” he said. “It’s super important. And it’s just starting.”
He sees significant practical uses for AI in areas such as mineral exploration, where advanced systems can sift through geological records and highlight patterns that would take human analysts far longer to uncover. At the same time, he is sceptical that the “hundreds of billions of dollars” being directed into data centres will necessarily deliver satisfactory returns, particularly if much of the capacity is dedicated to gathering and analysing consumer data.
For Casey, the key distinction is that while AI may reshape industries and economies, not all investments associated with the technology will succeed. He warned that many projects and companies built around AI could still fail, even if the underlying tools continue to advance and spread.
