IDF begins pumping seawater into Hamas tunnels in Gaza -WSJ
In 2015, Egypt flooded tunnels between the Gaza Strip and the Sinai Peninsula with seawater.
A terrorist from the al-Quds Brigades, the military wing of the Palestinian Islamic Jihad, is seen inside a military tunnel in Beit Hanun, in the Gaza Strip.(photo credit: ATTIA MUHAMMED/FLASH90)Updated: 
