The extreme dangers of war reporting have been highlighted by two incidents in the battle for Tripoli - the reports by Sky's Alex Crawford from a rebel convoy entering the capital, and the plight of other journalists trapped in the Rixos Hotel. Jon Williams, the BBC's foreign editor, has defended the corporation's coverage, after it was beaten into the Libyan capital at the weekend by Sky News, reports the Guardian.On Radio 4's Media Show, he said war reporting was a combination of "luck and judgment". The paper says: "Williams applauded Crawford but said the BBC News team had made a judgment that it was not safe to travel with the convoy, while...