Why it was impossibl to achive peace between Israel and Palestinian since the signing of the camp David accords in 1978

Why did it prove impossible for peace to be achieved between Israel and Palestinian since the signing of the camp David accords in 1978? 1- Analyse the failure of camp David accords to achieve peace between Israel and Palestinian 2- To analyze the collapse of Oslo peace process in the 1990s and 2001 2- Examine the intellectual depart of surrounding the intractability of Israeli-Palestinian conflict