HARDtalk - Mahmoud al-Zahar, Senior Hamas official

Following the death of a senior official in Dubai, Hamas has blamed Israel and vowed revenge. But after coming under pressure for its refusal to sign a reconciliation agreement with its Fatah rivals, can Hamas really afford to engage in another round of violent confrontation? Mahmoud al-Zahar is a co-founder of the organisation and one of its most senior leaders in Gaza. Is it time for Hamas to show some political flexibility?