An Italian journalist rescued from hostage-takers in Iraq last month has reacted angrily to a US military investigation absolving American soldiers of responsibility for killing the man who rescued her. Nicola Calipari, a senior Italian intelligence agent, was shot dead on March 4 when US soldiers fired at his car as he took the reporter, Guiliana Sgrena, to Baghdad airport. A report leaked by an American army official in Washington last night was said to have cleared US troops of any culpability for his death. The official said the soldiers had followed their rules of engagement and should not therefore...