Top five countries by military expenditure in 2014.
According to the International Institute for Strategic Studies.
This article is a list of countries by military expenditure, the amount spent by a nation on its military in a given year. Military expenditure figures are presented in US$ based on either constant or current exchange rates. These results can vary greatly from one year to another based on fluctuations in the exchange rates of each country's currency. Such fluctuations may change a country's ranking from one year to the next.