Ghulam Haidar Hameedi, the mayor of Kandahar, has been killed in a suicide bombing. The attack comes just two weeks after Amhad Wali Karzai, the half-brother of the Afghan president and one of the most powerful men in the country, was killed in the same city. The Taliban has claimed responsibility for the attack. The BBC's Bilal Sarwary has the latest on the attack – the third high-profile  assassination  in Kandahar in the last month – and what it means for stability in the region.