U.S. Secretary of State Hilary Clinton says the chances of civil war in Syria are high if the world fails to act. There are mixed messages on whether the U.S. would take military action there without the U.N. Iran claims it defeated a powerful computer virus used for spying. Pakistan militants deny links to a doctor hired by the C.I.A. to help track down Osama bin Laden. Ireland declares victory in a referendum on Europe’s new fiscal treaty. The vote comes as European’s central bank chief said the eurozone’s current structure can’t be sustained. And Great Britain’s Queen Elizabeth celebrates sixty years on the throne.