The Yellow Line was established by Israel after the April ceasefire as part of a proposed buffer zone inside southern Lebanon. BEIRUT: The Israeli military has expanded its ground operations in southern Lebanon beyond a demarcation line that Israel set up several kilometres inside Lebanese territory after an April 16 ceasefire with Hezbollah , two sources said on Tuesday (May 26). The sources gave no further details on the extent of the advance beyond the so-called " Yellow Line ". The line,