Hamas Deputy Foreign Minister Ghazi Hamad has called for a full independent scientific investigation into the death of the former Palestinian leader Yasser Arafat following claims he had been poisoned.

During a nine-month investigation by Al Jazeera, scientists said they uncovered polonium-210 on belongings given to his widow.

Hamad told HARDtalk's Zeinab Badawi that he believed Israel was responsible. Israel has denied any involvement in Arafat's death. His medical records say he had a stroke resulting from a blood disorder.

You can watch the full interview on BBC World News on Thursday 5th 3rd July at 03:30, 08:30, 15:30 and 20:30 GMT and on the BBC News Channel on Friday 6th July at 04:30 BST and on Wednesday 4th 3rd July at 00:30 BST.

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