Hamas chief Ismail Haniyeh, whose assassination in Tehran earlier this week sparked fears of a wider war in the Middle East, was buried in Qatar following Friday prayers. Thousands of mourners gathered at Doha’s Imam Abdul Wahhab Mosque, the largest state mosque in Qatar, to bid farewell to the man regarded as the Islamist Palestinian group’s overall leader. The funeral service, which was attended by Qatari and Arab officials, began at midday with a call to prayer at the mosque. After the service mourners accompanied Haniyeh’s casket, draped in the Palestinian flag, in a procession. He was lat…