In the wake of an agreement between the United States and South Korea, Japan faces heightened pressure to increase its defense expenditure. This recent development has sparked debates both within the country and internationally about Japan's military funding. Factors contributing to the mounting strain include ongoing threats in the region and shifting geopolitical dynamics.

In Japan, this issue touches on a long-standing debate over the nation's defense strategy. Certain factions argue that increased defense spending is paramount considering regional threats and geostrategic changes, while others value pacifism and lean towards non-military solutions under the constraints of Japan's war-renouncing constitution.

In contrast, both the US and EU nations have more flexible military budgets. Many countries in these regions adjust their defense spending based on strategic needs and international involvement. However, public opinion on defense allocation remains divided, similar to the situation in Japan.