British Prime Minister David Cameron has paid tribute to Baroness Margaret Thatcher, the country's longest-serving prime minister who died this morning. <br /><br />Thatcher suffered a stroke - she was 87.<br /><br />Cameron cut short a European tour, flying back from Madrid where he had been meeting with Spanish prime minister Mariano Rajoy.<br /><br />...<br />http://www.euronews.net/