Mumbai, Feb. 22 -- In the aftermath of the tragic killing of at least 40 men of the Central Reserve Police Force at Pulwama, there has been a clamour for some form of reprisal against Pakistan, believed to be the perpetrator behind the attack. The brutal nature of the assault seems to call for nothing short of war to end once and for all the unending cycle of violence from across the border. Yet, even as the government in tandem with the military brass considers the best response, it bears repeating that modern wars are hugely expensive affairs and the end results often don't justify the costs. According to a recent estimate by the Costs of War project at the Watson Institute of Brown University in the US, the direct and indirect costs of t...