Key Takeaways Casey said $15 trillion in U.S. debt may need refinancing within 12 months. $30,000 Shahed drones are challenging U.S. missiles costing up to $5 million. Casey favors gold miners as $4,000 bullion lifts margins above $1,700 costs. Doug Casey, the best-selling author of “Crisis Investing,” spoke with host David Lin on The David Lin Report, or TDLR, about U.S. debt, commodity prices, military technology, artificial intelligence (AI), and the changing balance of global power. His conclusions were frequently bearish, though he separated long-term technological progress from the valuations investors are assigning to it. Debt Costs Tighten the Noose …