LEBANESE FIGHTING JEOPARDIZES MCE
Oct 24: Lebanese Christian forces, using Israeli-supplied weapons, occupy Khiam, Lebanon, 5 mi from Israeli border; Western diplomats say Israel seeks unbroken mil security zone north of border from Mediterranean to slopes of Mt Hermon; say sudden cease-fire between Syria and Palestinians took Israelis by surprise and caused them to increase their support of Christians which became more visible than intended; map (M)