Defense budgets are among the largest items in many national budgets, so they attract scrutiny. Supporters of higher spending argue that deterrence and readiness require sustained investment and that threats are evolving.
Skeptics argue that resources are finite, that some spending is wasteful, and that other priorities matter. Both sides use comparisons to economic output, past spending, and the spending of rivals.
Useful debate starts with goals: what the country wants to deter, protect, or achieve, and what level of risk it accepts.
