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.
WASHINGTON â The U.S. military is spending as much as $10 million per day on its new air war against Islamic State militants in Iraq and Syria, a relative pittance compared with the hundreds of millions it spent fighting every day in Afghanistan in 2013.