WORLD IN BRIEF : COLOMBIA : Barco Makes Offer to Drug Cartel Chief

President Virgilio Barco Vargas promised that if the head of the Medellin drug cartel surrenders, he will not be extradited to the United States and will receive a fair trial in Colombia. Hours later, the cartel threatened to kill a senator and explode a bomb in the capital if three men arrested last week are not freed. The three are believed to be cartel security men. Barco, who has said he would not negotiate with traffickers, did not explain why he made the offer to Pablo Escobar, who tops the U.S. extradition list. The traffickers have said they would rather die than face trial in the United States. Barco did not say what charges Escobar would face if he surrenders.