How much could the Iran war cost the United States? This is a question on many minds. While estimating the total cost of this military campaign is difficult, experts warn that a bigger challenge might be the depletion of weapon stockpiles.The long-standing conflict between the US and Iran has entered a new phase following joint US-Israel airstrikes on Iran on Saturday, marking the beginning of open military hostility.With US President Donald Trump signaling that this operation could last four to five weeks, here is an analysis of whether Washington can sustain a new war in the Middle East and what...