Former UN chief Javier Perez de Cuellar, who led the world body during the Iran-Iraq war and the civil war in El Salvador, died Wednesday in his native Peru, his son said. "My dad died after a complicated week. He died at 8:09 pm tonight (0109 GMT Thursday) and is resting in peace," Francisco Perez de Cuellar told RPP radio. fj/yow/it/rma