Global military budgets have exploded past $2.4 trillion, with a $900.6 billion Pentagon authorization, European rearmament, and an Asia–Pacific arms race turning defence into one of 2026’s most powerful secular themes. But this is not the old steel-and-tanks trade: AI-enabled electronic warfare, autonomous drones, hypersonics, space assets, and directed-energy weapons are driving a technology super-cycle that benefits primes like Lockheed, Raytheon, and Northrop alongside growth names such as Kratos and AeroVironment. For investors, that means genuine multi-year visibility—yet also stretched valuations, dependence on government budgets, and the ever-present risk of a “peace dividend” selloff, making position sizing, ETF usage, and clear risk limits just as important as picking the right contractors in this new arms race.