No-fly zone in Syria 'no less than an act of war,' top general says

In a letter to Congress, the chairman of the Joint Chiefs of Staff cautions that a no-fly zone in Syria could also be costly, averaging as much as $1 billion per month.

http://www.csmonitor.com/USA/Military/2013/0723/No-fly-zone-in-Syria-no-less-than-an-act-of-war-top-general-says