If Israeli Palestinian peace talks are going nowhere, is there an alternative route to an independent Palestinian state? Leading figures in the Palestinian Authority seem to think there is a plan B. They're planning to make a declaration of independence later this year in the hope that the international community will back them. The Palestinians say they're engaged in a process of state-building - but what can it yield if Israel won't play ball? HARDtalk's Stephen Sackur speaks to senior Palestinian Authority official Nabil Sha'ath.