Military Spending
Historical Perspective
There are two ways in which we might want to measure military spending; the first way is spending in real terms and the second is as a percentage of GDP. Military expenditure in real terms is important since the absolute level of expenditure matters for the outcome of war. The US spending 10% of its GDP fighting a war is likely to defeat a low or middle income country spending 50% or more of its GDP. Yet, military expenditure as a percentage of GDP allows us to get a handle on the priorities and ambitions of a country.
The military expenditure of a country is largely determined by the whether it is at war or not
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