right now the current boarders are giving a headache to the army. an undisclosed amount of weapons are entering gaza which will eventually land in israel regardless of the might of the idf. imagine 1967 borders? every inch will be bombarded by these missiles that have defied the might and capability of the idf. the question is; is it better to fight the palestinian within israel controlled land or to fight them on their turf like gaza?
IDF soldiers find improvised weapons and ammunition at Jenin refugee camp (Haaretz)
from the article: Former Israeli diplomats in Washington: 1967 borders are defensible