Today, NATO dispatched war ships off the coast of Libya to enforce an arms embargo.
http://www.nato.int/cps/en/SID-3BC3A...news_71726.htm
http://www.cbsnews.com/stories/2011/...20046160.shtml
What makes it significant is the fact that while the US is participating, it is not taking the lead and that Turkey, the only Muslim member of NATO is participating as well.
IMO, any action that can potentially limit the expansion of Kaddaffi's attacks against his own people and, at the same time, not be perceived by other Arab nations as US intervention, is a positive action.