The rapid speed of globalization and increasing economic interdependence has had a direct impact on defence policies and countries are constantly seen fine-tuning their priorities. Walden Bello argues in his book Dilemmas of Domination that the declining US hegemony would prompt US allies in Asia to alter their defence planning and strategies vis-à-vis emerging powers like China.

Procurement of new weaponry and equipment for the armed forces is a long, complex and arduous process. Funds involved are enormous and the quality of equipment selected has a profound influence on national defence potential. Therefore, most countries have evolved elaborate procedures aimed at procuring the most appropriate equipment at affordable prices.

Defence planning is essentially a subset of overall national level planning in the political, economic and social spheres and has to be evolved in the context of global and proximate factors affecting the nation. . It has also to take into account the philosophy and ethos animating the national psyche; in other words the historical and cultural forces which have shaped the collective memory and outlook of the people over the centuries.