The sight of a moustachioed former Marxist revolutionary and American Cold War foe hugging babies and autographing baseball caps as he embraces democracy should bring a frisson of pleasure to the US.But instead, the fact that the election campaign of the Sandinista leader Daniel Ortega is going so well that he may return to power in Nicaragua next month is causing alarm in Washington. For although Mr Ortega's old Soviet mentors have gone, his country is once again the focus of a crucial regional power play in Washington's Latin American back yard. Some 27 years after his Sandinista movement overthrew...