Suspected rebels in Peru have killed seven men, including five policemen, in an ambush in the country's coca-growing interior. The police convoy was attacked during a crackdown on illegal coca-growing in the second major ambush in a year. The interior ministry has not blamed any group for the attack but remnants of the Shining Path guerrilla movement are known to operate in the region. More than 20 police have been killed in ambushes in the last year. The rebel group, which led one of Latin America's bloodiest insurgencies in the 1980s and 1990s, has claimed responsibility for similar attacks. The...