Osama bin Laden’s terror network claims to have bought ready-made nuclear weapons on the black market in central Asia, the biographer of al-Qaida’s No. 2 leader was quoted as telling an Australian television station. In an interview scheduled to be televised on Monday, Pakistani journalist Hamid Mir said Ayman al-Zawahri claimed that “smart briefcase bombs” were available on the black market. It was not clear when the interview between Mir and al-Zawahri took place. U.S. intelligence agencies have long believed that al-Qaida attempted to acquire a nuclear device on the black market, but say there is no evidence it was successful. Full Story