UNESCO is a cultural body ... so this act basically says that Israel is not even willing to let the Palestinians exercise their cultural rights and develop them with exchange of educational and scientific information from other nations. And then they'll accuse the Palestinians of being backward and hate mongering in the same sentence. I know the Jewish word for it ....
Hamas says Egyptian mediation has restored calm along Israel, Gaza border (Haaretz)
from the article: Israel freezes UNESCO funding after Palestinian membership