Diamond Jubilee

London Dept: In June, the city put on damp but impeccably organized Diamond Jubilee celebrations. This month, it will host the Olympics. Barring terrorist attacks and transportation disasters -- not a small risk, given the organizers are relying on public transport -- the games should reinforce the city's sense it is on top of the world, according to Winnipeg Free Press. Yet London's position is more precarious than it feels. The city's success during the past quarter-century has been the consequence of historical accident and good policy. Now, history is moving on and the policy-makers are messing up. They could tip the city into a decline without even noticing it, because the ecosystem of a great city is a complex and fragile thing and lONDON, ENGLAND - JANUARY 01: Fireworks light up the London skyline just after midnight on January 1, 2009 in England. Five hundred thousand people braved freezing conditions to see in the New Year on the River Thames next to the London Eye observation wheel and Big Ben. Photo by Oli Scarff/Getty Images (www.immigrantscanada.com). As reported in the news.