THE events in Uruguay are an ugly example of a rising pattern of kidnapings and killings that plague Latin America. Among the major incidents:
APRIL 1967: A terrorist in the Dominican Republic celebrated the anniversary of the U.S. intervention by hurling a grenade at an American schoolteacher and killing him.
JANUARY 1968: Guerrillas in Guatemala City machine-gunned to death two U.S. military attaches who were returning to work after lunch.
AUGUST 1968: U.S. Ambassador John Gordon Mein was gunned to death in Guatemala City when he tried to escape capture by guerrillas.
OCTOBER 1968: U.S....