Supreme Allied Commander Europe for NATO, Admiral James Stavridis, is silhouetted against a Wikpedia logo during his keynote address at the Royal United Strategic Institute (RUSI) in central London October 2, 2009. Stavridis used a slide show of images during his address to illustrate a number of topics, including how the internet has aided communication around the world. REUTERS/Toby Melville (BRITAIN POLITICS MILITARY)