Why does Kuwait spend so much on defense for its size?
Kuwait's traumatic 1990-1991 Iraqi invasion and occupation created a permanent national security doctrine: maintain close US treaty ties and buy world-class military hardware in sufficient quantities to deter neighbors and enable rapid US reinforcement. With a population of ~4.9M but oil revenues enabling state budgets exceeding $80B, defense spending of $7.8B (~4.7% GDP) is politically and financially sustainable.