WASHINGTON - PPP Chairman Bilawal Bhutto Zardari says he holds former President Pervez Musharraf responsible for the murder of his mother Benazir Bhutto, as he himself vowed to play a larger political role in the next elections.‘He (Musharraf) murdered my mother ... I hold him responsible for the murder of my mother’, he said in an interview with CNN on Thursday evening. On another TV channel, Oxford-educated Bilawal Bhutto Zardari called on the US to apologise for the drone strike that killed 24 Pakistani soldiers in November.Bilawal said her assassination was due to a combination of Islamic extremists, and Musharraf's regime.‘Al Qaeda issued the instructions to do it, the Taliban... carried out the actual attack, while Pervez Musharraf purposely sabotaged my mother's security when he knew there was going to be attacks, so she would be eliminated’, he said.Asked why he was saying so, he said: ‘because he (Musharraf) was aware of the threats. He himself had threatened her in the past. He said your security is directly linked to our relationship and our cooperation’.‘When he imposed emergency and it was clear that he was pulling the wool over our eyes, he was not interested in returning democracy to Pakistan and my mother started to speak out more against him, the security decreased’, said Bilawal, who is currently on a 8-day US visit.About his future plans, Bilawal said, ‘I am chairman of Pakistan Peoples Party. I didn't campaign in last elections.I went to university.I don't feel like at the moment I have the mandate to take a particularly active role. I look forward to campaigning in the next election and playing a larger role then’. Responding to a question on his safety in Pakistan, he said, he was not worried. ‘I am confident Pakistani government will provide me with the adequate security, unlike the government at the time that sabotaged my mother's security in Pakistan’, Bilawal said.Dealing with the Salala deaths on his MSNBC interview, he said, ‘I think that an immediate apology was the humane, appropriate thing to do. I'd like the American public to consider what their reaction would have been had 24 American soldiers been killed in such a way on the border with Mexico. I think an apology would have been appropriate’. When pressed on whether too much time has passed for the US government to offer an apology, he said, ‘it's never too late for an apology’.Relations came under further strain on Wednesday when the Pakistani doctor who helped the CIA find Osama bin Laden was sentenced to 33 years in prison for ‘high treason’, prompting outrage from lawmakers on both sides of Congress.Bilawal responded to anger felt in the US by pointing out that it's a crime for anyone to collaborate with foreign intelligence, even if it's with a friendly country. ‘We have independent judiciary, actually the democratic government restored independent judiciary for the first time in our history. Whether I wanted him out or not is irrelevant. I can't put pressure on the judiciary to decide either way’, he said.About US expectation that President Zardari would announce reopening of the supply routes at NATO summit, he pointed out that his father was extended an unconditional invitation to attend the Chicago meeting. However, he noted, ‘both countries are working together and I am hopeful that they will resolve their differences because we have a common goal and we can only achieve it together’. The PPP leader said continuous bombing into Pakistani territory by US drones is not only counterproductive in the war on terror but it is also violation of our sovereignty.‘It is also a violation of US war powers act as well as international law’, he added. Bilawal said it has been Pakistan’s intelligence cooperation that has led to capture of al Qaeda operatives and this counterterror contribution is more than by any other nation. He rejected the suggestion that Osama bin Laden had some complicity from Pakistan in hiding for several years. In this respect, Bilawal said the US found a treasure trove of evidence from the Abbottabad compound, none of which points to any link between Osama and the Pakistani government.