Gaza doctors add to the growing number of accounts that suggest Israel used white phosphorus munitions against international norms of war.
Israel temporarily closed its crossings into Gaza Tuesday after a soldier was killed by a roadside bomb. After the attack, Israeli forces killed one Palestinian and wounded a senior militant.
The United Nations ran summer camps for more than 250,000 Palestinian children in a bid to combat militancy that often takes root at a young age in Gaza.
The UN High Commissioner for Refugees estimates 67 million displaced people worldwide in 2007, a result of war, poverty, and climate change.
Residents started returning Monday to the Nahr al-Bared camp, which was damaged in fighting last year.