As such, comparative advantage is an important concept in global trade, and it's the reason many countries concentrate on trying to produce certain goods or services more efficiently than other countries.
In March 2013, the total cost of the Iraq War to date was estimated at $1.7 trillion by the Watson Institute of International Studies at Brown University. Some argue that the total cost of the war to the U.S. economy will range from $3 trillion to $6 trillion, including interest rates, by 2053, as described in the Watson Institute's report.
But the truly astounding number in Kosiakâs report comes on page 38, where he estimates that the total cost of sending a single soldier to fight in Iraq or Afghanistan is about $775,000 per year. Kosiak came up with that number by using data published in March by the Congressional Budget Office.