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.
Cost to US of Iraq and Afghan wars could hit $6 trillion. The cost of the wars in Iraq and Afghanistan could reach as high as $6 trillion dollars â or $75,000 for every household in America â a new study from Harvard University has found.