SEOUL -- As a result of the latest North-South naval clash on the West Sea, South Korean President Kim Dae Jung's "sunshine policy" is now in shambles. But it need not have been so. Even before the defense ministers of the two Koreas sat down almost two years ago in Cheju following the 2000 Pyongyang summit -- to discuss the relinking of the severed rail line across the demilitarized zone, or DMZ -- procedures to prevent repeated naval clashes in the West Sea should have topped their agenda. In retrospect, this was an ominous omission.