THIRTEEN detainees are on hunger strike at the US military base in Guantanamo Bay, Cuba, and are being force-fed through tubes, the US Navy said overnight. "Currently, there are 13 hunger strikers at Guantanamo. Two of the 13 have been on hunger strike since August 2005. Most of the others began their hunger strike in January or February," navy Commander Robert Durand said. He said the group were being fed via tubes, but were otherwise "in good health". "The involuntary feeding is not designed to break the hunger strike, it is a medical procedure to deliver the appropriate calories and...