Israel must do whatever it can to prevent the building of restoring of tunnels from Hamas. To insure that they prevent such offensive action counteroffensive actions must occur (see below). This way the Israeli people can feel more secure in their homeland.
(1) Cement should be sold in only block form that has GPS devices randomly placed in such units that will enable the Israeli military know whether they would be used for construction of houses verses tunnels.
(2) Sensitive Seismographs and sonar technology must be utilized to pick up the sound and or vibration that occurs from developing such tunnels.
(3) Intelligence gathering in the Gaza Strip must be intensified to discover the short term plans of terrorist groups such as Hamas and Islamic Jihad.
(4) Any machinery that can be utilized to develop such tunnels must be carefully monitored and have tracking devices on them.