Go-It-Alone France Shifts Military Stance, (Washington Post)…Molly Moore, May 25, 2008 , Pg. 17
…After decades of a go-it-alone military strategy, France has become one of Europe’s greatest advocates of an emerging European Union defense force and is considering allowing French forces back into the NATO command structure after a 43-year absence.
Conceptually, change represents a “Signal” … e.g., special cause of variation.