Any time there is a war and countless people in one, two or more nations die for some ideological, religious, ethnic, cultural or nationalistic “reason”, two entities benefit: those who supply the weapons and those who supply the loans to buy the weapons.
And when it comes to supplying weapons to the world, in both absolute dollar and relative (as a % of GDP) terms, nobody even comes close to that paragon of democratic values, the United States of America.