EMMA FARGE A Liberian rebel commander was sentenced in Switzerland to 20 years in jail for rape, killings and an act of cannibalism, in one of the only civil war-era cases from his West African country to go to trial. The case was Switzerland's first war crimes trial in a civilian court. It involved 46-year-old Alieu Kosiah who went by the nom de guerre "bluff boy" in the rebel faction ULIMO that fought former President Charles Taylor's army in the 1990s. Kosiah, faced 25 charges at the Swiss Federal Court including killings of civilians, rape and an act of cannibalism.…