President Asif Ali Zardari has revealed that he asked former Prime Minister Benazir Bhutto not to go back to Pakistan knowing threats to her life given by Taliban terrorists. He said their children are witnesses of it. The president has also expressed his dissatisfaction over a report of the United Nations in Benazir murder case as it has not declared anyone responsible of the murder. According to media reports, While his address to the central executive committee of Pakistan Peoples Party (PPP), he said many proofs have been collected in BBs murder case and assailants would soon be exposed. Zardari urged the party members to work hard as there are only two years to go to next elections. The president conferred medal to his daughter Asifa, which was awarded to Benazir Bhutto for her struggle for democracy.