As of Thursday, 257 children were among the approximately 760 reported dead in Gaza. There were another 1,080 children among the 3,100 injured in the conflict, according to statistics from Gaza's health ministry.
The U.N.'s top humanitarian official, John Holmes, described the numbers as "credible" and deeply disturbing. U.N officials say about half of the casualties were civilians.
"It's particularly distressing and horrifying that the current casualties seem to be increasingly civilian casualties, with an increasing incidence of whole families being buried in houses which have been hit," Holmes said.