Five British hostages who were kidnapped in Iraq almost a year ago are being held inside Iran by Revolutionary Guards, according to two separate sources in the Middle East and London. The hostages were handed over to the Revolutionary Guards by their Iraqi kidnappers last November, the sources believe. One of the sources said they were being held in the western Iranian city of Hamadan. If confirmed, the involvement of Revolutionary Guards would be seen as evidence that senior figures in the Iranian government had backed the decision to hold them in the country. However, British officials said that while...