Three detainees at the US base at Guantanamo Bay, Cuba have died in what appears to have been a suicide pact. The inmates, two Saudis and a Yemeni, hanged themselves in their cells. The camp commander said the deaths - the first at the camp - were planned in "an act of warfare". Rights groups said they were driven by despair. President George Bush expressed "serious concern" over the suicides at Guantanamo, which holds about 460 men captured in the US "war on terror". There have been dozens of suicide attempts since the camp was set up four years ago...