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.
$60 billion: Amount paid for reconstruction, (which was ruled largely a waste due to corruption and shoddy work.). $4 billion: Amount owed to the U.S. by Iraq before the invasion. 1.6 million: Gallons of oil used by U.S. forces each day in Iraq (at $127.68 a barrel). $12 billion: Cost per month of the war by 2008.$7 billion: Amount owed to Iraq by the U.S. after the war (mostly due to fraud).$20 billion: Annual air conditioning cost.Missing: $546 million in spare parts; 190,000 guns, including 110,000 AK-47s.60 billion: Amount paid for reconstruction, (which was ruled largely a waste due to corruption and shoddy work.). $4 billion: Amount owed to the U.S. by Iraq before the invasion. 1.6 million: Gallons of oil used by U.S. forces each day in Iraq (at $127.68 a barrel). $12 billion: Cost per month of the war by 2008.