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The quarter-finals of the 2022 men's soccer World Cup begin Friday in Qatar, with five teams from Europe, two from South America, and one from Africa. It's going to be war on the pitch in each of the four games, but what would happen if each side actually went to war with each other? We look at who would win each round — and the World Cup — if what counted was not soccer skills but rather military muscle, measured by percentage of GDP spending on defense.