Pakistan's disgraced scientist A Q Khan has admitted his country’s involvement in the nuclear programmes of Iran, North Korea and Libya. The Sunday Times newspaper of London reports, the 74-year-old Khan, dubbed as maestro of the world’s largest nuclear black market, has made the revelation in a four-page 'secret' letter addressed to his Dutch wife Henny. The letter was written after his arrest in 2003. The letter outlines Pakistan’s nuclear links with China and its official support to the atomic programme of Iran and North Korea. The letter also mentions Libya. <br/><br/>On Iran, the letter says: probably with the blessings of former Pakistan Prime Minister Benazir Bhutto, her Defence Adviser retired General Imtiaz asked him to give a set of drawings and some components to the Iranians. The names and addresses of suppliers were also given to the Iranians. The newspaper report said the letter is a severe indictment of a generation of Pakistan’s political and military leadership, who used Khan’s nuclear and missile skills to enhance Pakistan’s diplomacy.