A combination picture shows destruction in the Shejaia neighbourhood, which witnesses said was heavily hit by Israeli shelling and air strikes during an Israeli offensive, in the east of Gaza City August 1, 2014 (top) and the same place July 6, 2015. July 8th marks the one-year anniversary of the war between Israel and Hamas in Gaza. REUTERS/Mohammed Salem 

A general view of destruction in the Shejaia neighbourhood, which witnesses said was heavily hit by Israeli shelling and air strikes during an Israeli offensive, in the east of Gaza City August 1, 2014. REUTERS/Mohammed Salem 

A Palestinian man walks in the Shejaia neighborhood after clearing the rubble of houses, that witnesses said were destroyed by Israeli shelling during a 50-day war last summer, ahead of the first anniversary of the war, in the east of Gaza City July 6, 2015. REUTERS/Mohammed Salem 

A car drives past a petrol station, that was burnt after a rocket hit it during the 2014 Gaza war, in the southern Israeli city of Ashdod, Israel, July 7, 2015. REUTERS/Amir Cohen 

A combination picture shows a Palestinian woman arriving to look at her house in Beit Hanoun town, which witnesses said was heavily hit by Israeli shelling and air strikes during an Israeli offensive, in the northern Gaza Strip August 1, 2014 (top) and the same place July 6, 2015 REUTERS/Suhaib Salem 

A Palestinian woman arrives to look at her house in Beit Hanoun town, which witnesses said was heavily hit by Israeli shelling and air strikes during an Israeli offensive, in the northern Gaza Strip August 1, 2014. REUTERS/Suhaib Salem 

Palestinian boys ride a bicycle on a street in Beit Hanoun town, ahead of the first anniversary of the 50-day war, in the northern Gaza Strip July 6, 2015. REUTERS/Suhaib Salem 

Israelis run towards a bomb shelter as a siren warning of incoming rockets sounds in the southern city of Ashkelon, Israel, July 9, 2014 (top) and the same place July 7, 2015. REUTERS/Baz Ratner (top) and Amir Cohen 

Israelis run towards a bomb shelter as a siren sounds warning of incoming rockets in the southern city of Ashkelon July 9, 2014. REUTERS/Baz Ratner 

A closed bomb shelter, used during the 2014 Gaza war, is seen in the southern city of Ashkelon, Israel, July 7, 2015. REUTERS/Amir Cohen 

A combination picture shows Israeli emergency personnel work at the scene after a rocket, fired by Palestinian militants in Gaza, landed in Yahud near Tel Aviv, Israel July 22, 2014 (top) and the same place July 7, 2015. REUTERS/Daniel Bar-On (top) and Baz Ratner 

Israeli emergency personnel work at the scene after a rocket, fired by Palestinian militants in Gaza, landed in Yahud near Tel Aviv July 22, 2014. REUTERS/Daniel Bar-On 

A plastic cover is seen outside a house, that was damaged by a rocket fired from Gaza during the 2014 Gaza war, in Yahud near Tel Aviv, Israel, July 7, 2015. REUTERS/Baz Ratner 

A combination picture shows a Palestinian woman comforting her son as they sit next to their destroyed house in Beit Hanoun town, which witnesses said was heavily hit by Israeli shelling and air strikes during an Israeli offensive, in the northern Gaza Strip July 26, 2014 (top) and the same place July 6, 2015. REUTERS/Suhaib Salem 

A Palestinian woman comforts her son as they sit next to their destroyed house in Beit Hanoun town, which witnesses said was heavily hit by Israeli shelling and air strikes during an Israeli offensive, in the northern Gaza Strip July 26, 2014. REUTERS/Suhaib Salem 

Palestinians walk in a street in Beit Hanoun town after clearing the rubble of house that witnesses said was destroyed by Israeli shelling during a 50-day war last summer, ahead of the first anniversary of the war, in the northern Gaza Strip July 6, 2015. REUTERS/Suhaib Salem 

A combination picture shows Palestinians performing Friday prayers outside a mosque which witnesses said was destroyed by an Israel air strike during an Israeli offensive, in Gaza City August 15, 2014 (top) and the same place July 6, 2015. REUTERS/Mohammed Salem 

Palestinians perform Friday prayers outside a mosque which witnesses said was destroyed by an Israel air strike during the offensive, on the second day of a five-day ceasefire in Gaza City August 15, 2014. REUTERS/Mohammed Salem 

Palestinian girls walk near a makeshift mosque (L), that witnesses said was destroyed by Israeli shelling during a 50-day war last summer, after clearing the rubble of the mosque, ahead of the first anniversary of the war, in Gaza City July 6, 2015. REUTERS/Mohammed Salem 

A combination picture shows Israelis standing at the scene after a rocket fired by Palestinian militants in Gaza landed in the southern city of Ashdod, Israel, July 14, 2014 (top) and the same place July 7, 2015. REUTERS/Amir Cohen 

Israelis stand at the scene after a rocket fired by Palestinian militants in Gaza landed in Ashdod July 14, 2014. REUTERS/Amir Cohen 

The exterior wall of a building, that was damaged by a rocket fired from Gaza during the 2014 Gaza war, is seen in the southern city of Ashdod, Israel, July 7, 2015. REUTERS/Amir Cohen/Files