Who is to blame for the failure of the peace process?

Israeli prime minister Yitzhak Rabin and Palestinian leader Yasser Arafat took first steps towards a permanent and comprehensive peace based on a Two State solution by signing the Oslo Accords in the mid 1990s. However, a quarter of a century later peace remains as elusive as ever. Is this the Palestinians’ fault for having unrealistic expectations and failing to rein in violence? Or is it the Israelis’ fault because they were never serious about giving up control of Arab lands conquered in 1967?