"If a Strategic Arms Limitation Treaty is reached and ratified, ceilings and subceilings will have been placed on the number of launchers from which the U.S. and the U.S.S.R. could attack each other over intercontinental distances," the Belfer Center's Paul Doty and Robert Metzger write in an International Security article, "Yet, progress in reductions could be an illusion if at least a start is not made in bringing weapons of lesser range under control. These are the gray area weapons that can reach targets 400 to 2,000 miles or more distant from the point of launch....These gray area weapons unconstrained by either SALT or MBFR consist of a wide array of medium bombers, fighter- bombers, carrier aircraft, intermediate and medium range ballistic missiles and cruise missiles."