$265 Bomb, $300 Billion War: The Economics of the 9/11 Era’s Signature Weapon

What I found interesting in this article is the contrast between the cost of improvised explosive device(IED) and the cost of counter-IED.If we pay attention to the great difference,we can see clearly that it's not that profitable for a country to launch wars against a poorer country,regardless of the potential resources it can get. Some people claim that a war can reconstruct a nation's economy,but when I look at the domestic condition of Iraq and Afghan,I cannot see any resurgence; instead, more American soldiers and local people die or wound,terrorism becomes rampant,and the US government deficit on war is skyrocketing.