I am guessing they are referring to the education programs under UNRWA that allegedly were unaltered and issued by the Palestinian Authority which promoted and instilled hate of Israelis.
If anyone is interested in the details surrounding that entire situation.
Nuclear weapons are the single biggest mistake humanity has ever made next to the Industrial revolution.
We still fight horribly bloody wars even with the threat of nuclear annihilation. It is obvious that nuclear weapons do nothing but make everything worse, and the materials used to create them would be better used for energy generation.
If we were smart we would decommission every weapon on the planet and ensure no group or person can make another one, and put the materials to a better use.