A Palestinian man takes cover with his son in a makeshift shelter during heavy rain, near houses that witnesses said were destroyed or damaged by Israeli shelling during the most recent conflict between Israel and Hamas, in the east of Gaza City November 16, 2014. (Photo by Suhaib Salem/Reuters)

Palestinians, who live in a container as a temporary replacement for their house that witnesses said was destroyed by Israeli shelling during the most recent conflict between Israel and Hamas, cook on a fire on a rainy day in the east of Khan Younis in the southern Gaza Strip November 16, 2014. (Photo by Ibraheem Abu Mustafa/Reuters)

A Palestinian man walks past a house that witnesses said was destroyed by Israeli shelling during the most recent conflict between Israel and Hamas, on a rainy day in the east of Gaza City November 16, 2014. (Photo by Suhaib Salem/Reuters)

Palestinian children make their way to school in their neighbourhood which witnesses said was devastated by Israeli shelling during the most recent conflict between Israel and Hamas, on a rainy day in the east of Gaza City November 16, 2014. (Photo by Suhaib Salem/Reuters)

A Palestinian woman, who lives in a container as a temporary replacement for her house that witnesses said was destroyed by Israeli shelling during the most recent conflict between Israel and Hamas, looks out on a rainy day in the east of Khan Younis in the southern Gaza Strip November 16, 2014. (Photo by Ibraheem Abu Mustafa/Reuters)

A Palestinian man lights a fire to warm himself in a makeshift shelter near houses that witnesses said were destroyed or damaged by Israeli shelling during the most recent conflict between Israel and Hamas, on a rainy day in the east of Gaza City November 16, 2014. (Photo by Suhaib Salem/Reuters)

A Palestinian man walks past houses that witnesses said were damaged by Israeli shelling during the most recent conflict between Israel and Hamas, on a rainy day in the east of Gaza City November 16, 2014. (Photo by Suhaib Salem/Reuters)

A Palestinian man takes cover from the rain in a makeshift shelter, near houses that witnesses said were destroyed or damaged by Israeli shelling during the most recent conflict between Israel and Hamas, in the east of Gaza City November 16, 2014. (Photo by Suhaib Salem/Reuters)

Palestinian children, who live in a container as a temporary replacement for their house that witnesses said was destroyed by Israeli shelling during the most recent conflict between Israel and Hamas, look out on a rainy day in the east of Khan Younis in the southern Gaza Strip November 16, 2014. (Photo by Ibraheem Abu Mustafa/Reuters)

A Palestinian man lights a fire to warm himself in a makeshift shelter near houses that witnesses said were destroyed or damaged by Israeli shelling during the most recent conflict between Israel and Hamas, on a rainy day in the east of Gaza City November 16, 2014. (Photo by Suhaib Salem/Reuters)

A Palestinian woman holding her child walks past the ruins of a house that witnesses said was destroyed by Israeli shelling during the most recent conflict between Israel and Hamas, on a rainy day in the east of Gaza City November 16, 2014. (Photo by Suhaib Salem/Reuters)

A Palestinian man, who lives in a container as a temporary replacement for his house that witnesses said was destroyed by Israeli shelling during the most recent conflict between Israel and Hamas, repairs the shelter on a rainy day in the east of Khan Younis in the southern Gaza Strip November 16, 2014. (Photo by Ibraheem Abu Mustafa/Reuters)

A Palestinian boy holds an umbrella as he runs near houses that witnesses said were destroyed or damaged by Israeli shelling during the most recent conflict between Israel and Hamas, on a rainy day in the east of Gaza City November 16, 2014. (Photo by Suhaib Salem/Reuters)