“The SIPRI [Stockholm International Peace Research Institute] military expenditure project was initiated in 1967 to study developments in world military expenditure. Military expenditure is an indicator of the economic resources devoted to military purposes. There is no direct relationship between the level of military expenditure and output in terms of military resources, military activities or military capability. Military expenditure is an input measure and military output depends on several factors other than its financing. However, analysed in its economic and political context, the level and trend in military expenditure can provide information not only on the cost of military activities but also about their extent and change over time, which can have an impact on military capability or reflect military intentions.”