Four of six British soldiers killed in a southern Iraqi town were executed after they surrendered following a fierce gun battle, British newspapers reported, as Prime Minister Tony Blair ruled out sending more troops to the country.The British military policemen mounted a last stand Tuesday at a police station in Al-Majar Al-Kabir, around 200 kilometres (120 miles) north of Iraq's second city of Basra, and were killed, possibly with their own weapons, after they refused to flee, papers said.Most British newspapers, which carried the story of the deaths on their front pages, said the sequence of events was still...