Apparently, NATO (The North Atlantic Treaty Organization) is treating Madonna as case study for its development.

''...The quality of adapting to new tasks whilst staying true to one’s own principles is something which business analysts qualify as the Madonna-curve. This curve is named after the legendary pop-diva who reinvented herself each time her style and stardom went into inevitable decline, but whose audacity has lifted her up to ever higher levels of relevance and fame.

NATO should follow the Madonna-curve, and not wait till its controversies escalate into public wrangles. The argument that tinkering on the edges will do since all challenges can be dealt with one at a time simply does not hold. To be successful, NATO needs a package-deal of painful compromises, where each member state has to give and take. This requires a comprehensive reform effort which only a new strategic concept offers...''

You can read more here:
http://www.nato.int/docu/review/2008/03/ART5/EN/index.htm