.. and Vietnam. Had none of these happened the National Debt, today, would be barely 3 Trillion dollars less than it's present amount. This sum.. 3 Trillion dollars.. is barely more than half of the peace dividend resultant since Reagan's military buildup that triggered the collapse of the USSR in 1990. Had the USSR not imploded the United States since 1990 would have had to expend an added 5 Trillion dollars on DOD. Reagan's actions prevented such while having caused the USSR to collapse.