Palestinians carry the body of a local commander of Hamas's military wing Rabieh Barikeh, one of the four Hamas militants killed overnight in a firefight with Israeli troops, during his funeral on November 1, 2013 in Khan Yunis in the southern Gaza Strip. Barikeh was killed by tank fire, Palestinian officials said, while the Israeli army said five of its soldiers were wounded by an explosive device. The Israeli military said the fighting erupted when an explosive device went off as troops were clearing a tunnel from the Gaza Strip into Israel, allegedly to be used as a springboard for militant attacks. Photo by Abed Rahim Khatib/Flash 90

Palestinians carry the body of a local commander of Hamas's military wing Rabieh Barikeh, one of the four Hamas militants killed overnight in a firefight with Israeli troops, during his funeral on November 1, 2013 in Khan Yunis in the southern Gaza Strip. Barikeh was killed by tank fire, Palestinian officials said, while the Israeli army said five of its soldiers were wounded by an explosive device. The Israeli military said the fighting erupted when an explosive device went off as troops were clearing a tunnel from the Gaza Strip into Israel, allegedly to be used as a springboard for militant attacks. Photo by Abed Rahim Khatib/Flash 90

Relatives of a local commander of Hamas's military wing Rabieh Barikeh, one of the four Hamas militants killed overnight in a firefight with Israeli troops, mourn during his funeral on November 1, 2013 in Khan Yunis in the southern Gaza Strip. Barikeh was killed by tank fire, Palestinian officials said, while the Israeli army said five of its soldiers were wounded by an explosive device. The Israeli military said the fighting erupted when an explosive device went off as troops were clearing a tunnel from the Gaza Strip into Israel, allegedly to be used as a springboard for militant attacks. Photo by Abed Rahim Khatib/Flash 90

Palestinians carry the body of a local commander of Hamas's military wing Rabieh Barikeh, one of the four Hamas militants killed overnight in a firefight with Israeli troops, during his funeral on November 1, 2013 in Khan Yunis in the southern Gaza Strip. Barikeh was killed by tank fire, Palestinian officials said, while the Israeli army said five of its soldiers were wounded by an explosive device. The Israeli military said the fighting erupted when an explosive device went off as troops were clearing a tunnel from the Gaza Strip into Israel, allegedly to be used as a springboard for militant attacks. Photo by Abed Rahim Khatib/Flash 90

Palestinians carry the body of a local commander of Hamas's military wing Rabieh Barikeh, one of the four Hamas militants killed overnight in a firefight with Israeli troops, during his funeral on November 1, 2013 in Khan Yunis in the southern Gaza Strip. Barikeh was killed by tank fire, Palestinian officials said, while the Israeli army said five of its soldiers were wounded by an explosive device. The Israeli military said the fighting erupted when an explosive device went off as troops were clearing a tunnel from the Gaza Strip into Israel, allegedly to be used as a springboard for militant attacks. Photo by Abed Rahim Khatib/Flash 90

Relatives of a local commander of Hamas's military wing Rabieh Barikeh, one of the four Hamas militants killed overnight in a firefight with Israeli troops, mourn during his funeral on November 1, 2013 in Khan Yunis in the southern Gaza Strip. Barikeh was killed by tank fire, Palestinian officials said, while the Israeli army said five of its soldiers were wounded by an explosive device. The Israeli military said the fighting erupted when an explosive device went off as troops were clearing a tunnel from the Gaza Strip into Israel, allegedly to be used as a springboard for militant attacks. Photo by Abed Rahim Khatib/Flash 90

Relatives of a local commander of Hamas's military wing Rabieh Barikeh, one of the four Hamas militants killed overnight in a firefight with Israeli troops, mourn during his funeral on November 1, 2013 in Khan Yunis in the southern Gaza Strip. Barikeh was killed by tank fire, Palestinian officials said, while the Israeli army said five of its soldiers were wounded by an explosive device. The Israeli military said the fighting erupted when an explosive device went off as troops were clearing a tunnel from the Gaza Strip into Israel, allegedly to be used as a springboard for militant attacks. Photo by Abed Rahim Khatib/Flash 90

Israeli security forces stand guard as Palestinian protesters throw stones (unseen) during clashes after a demonstration against Israel's separation barrier and in solidarity with Palestinian prisoners being held in Israeli jails, in the West Bank village of Bilin , west of Ramallah. November 01, 2013 . Photo by Issam Rimawi/Flash 90

Palestinian protesters throw stones towards Israeli security forces (not seen) during clashes after a demonstration against Israel's separation barrier and in solidarity with Palestinian prisoners being held in Israeli jails, in the West Bank village of Bilin, west of Ramallah. November 01, 2013 . Photo by Issam Rimawi/Flash 90

Palestinian protesters throw stones towards Israeli security forces (not seen) during clashes after a demonstration against Israel's separation barrier and in solidarity with Palestinian prisoners being held in Israeli jails, in the West Bank village of Bilin, west of Ramallah. November 01, 2013 . Photo by Issam Rimawi/Flash 90

Israelis listen to as professor Emily Silverman lectures at a cafe in the center of Jerusalem. Several professors lectured in coffee shops and bookstores in the center of Jerusalem as part of the event "Einstein on Aza Street" organized by the Jerusalem municipality and Hebrew University. November 01, 2013. Photo by Miriam Alster/FLASH90

Israelis listen to as professors lecture at cafes and bookstores in the center of Jerusalem as part of the event "Einstein on Aza Street" organized by the Jerusalem municipality and Hebrew University. November 01, 2013. Photo by Miriam Alster/FLASH90

A clown prepares for performance as professors lecture at cafes and bookstores in the center of Jerusalem as part of the event "Einstein on Aza Street" organized by the Jerusalem municipality and Hebrew University. November 01, 2013. Photo by Miriam Alster/FLASH90

Israelis listen to as professors lecture at cafes and bookstores in the center of Jerusalem as part of the event "Einstein on Aza Street" organized by the Jerusalem municipality and Hebrew University. November 01, 2013. Photo by Miriam Alster/FLASH90

Israelis listen to as professors lecture at cafes and bookstores in the center of Jerusalem as part of the event "Einstein on Aza Street" organized by the Jerusalem municipality and Hebrew University. November 01, 2013. Photo by Miriam Alster/FLASH90

Israelis listen to as professors lecture at cafes and bookstores in the center of Jerusalem as part of the event "Einstein on Aza Street" organized by the Jerusalem municipality and Hebrew University. November 01, 2013. Photo by Miriam Alster/FLASH90

Israelis listen to as professors lecture at cafes and bookstores in the center of Jerusalem as part of the event "Einstein on Aza Street" organized by the Jerusalem municipality and Hebrew University. November 01, 2013. Photo by Miriam Alster/FLASH90

Israelis listen to as historian and writer Moshe Zimmerman lectures outside a bookshop in the center of Jerusalem. Several professors lectured in coffee shops and bookstores in the center of Jerusalem as part of the event "Einstein on Aza Street" organized by the Jerusalem municipality and Hebrew University. November 01, 2013. Photo by Miriam Alster/FLASH90

Israelis listen to as president of the Hebrew University Menachem ben Sasson lectures at a cafe in the center of Jerusalem. Several professors lectured in coffee shops and bookstores in the center of Jerusalem as part of the event "Einstein on Aza Street" organized by the Jerusalem municipality and Hebrew University. November 01, 2013. Photo by Miriam Alster/FLASH90

Palestinian women hold pictures of sick Palestinian prisoners held in Israeli jails outside the al aqsa mosque during a demonstration in solidarity with Palestinian prisoners who are held in Israeli jails. November 01, 2013. Photo by Sliman Khader/Flash90