An American soldier and a British soldier, as well as one US contractor, were killed Wednesday when rockets hit an Iraqi military base north of Baghdad, a US military official said. It was the deadliest attack on an installation hosting foreign troops in several years and comes after a spate of rocket attacks targeting US troops across Iraq as well as the US embassy in Baghdad. There was no immediate claim of responsibility but Washington has blamed Iran-backed factions for similar attacks. mjg/dwo