Underground tunneling from Gaza to Israel was apparently unknown by Israeli’s prior to this current 2014 conflict. Along with Hamas’ more powerful long range rockets the these tunnels will obviously make Israelis more fearful and perhaps more determined to strike critical blows to that terrorist organization. However, the very existence of Israel is a rallying topic for all Muslims. Saudi Arabia, Qatar, Iran, and most other Middle East nations are pouring more arms and money into destroying the Jewish state. The long term likelihood of peace are remote.
Click the first link at this web site to see some of the significant tunneling dug by the Hamas fighters. http://cryptome.org/2014-info/gaza-ugi/gaza-ugi.htm