Nixon Doctrine (1969)
On Guam in July 1969, President Richard Nixon told reporters the US would no longer commit ground troops to defend Asian allies. Allies had to defend themselves, with US material and air support as backup. The doctrine emerged from Vietnam War strain on the US military and budget.
South Korea, Japan, and Taiwan accelerated their own military buildups. US troop levels across Asia dropped sharply through the early 1970s.
Asian allies developed stronger indigenous defense industries. South Korea grew its army past 600,000 troops. The doctrine showed allies could fund their own forces when forced to.
Hegseth's Singapore speech echoes Nixon's logic for Europe: wealthy allies must defend themselves. The Asian reaction in 1969-1970 offers a template for how Europe might respond.
