The men threatened to kill more hostages unless their comrades are released from Afghan jails. In September 2002 an aide to Wakil Ahmad Muttawakil, the Foreign Minister of the Taliban, claimed he had been sent prior to 9/11 to warn the U.S. government of an impending attack and to persuade them to take military action against Al Qaeda's presence in Afghanistan. The aide claimed advance knowledge of the attack came from Yuldashev, which if true would indicate a high degree of cooperation between Al-Qaeda and the IMU. In his book Terror and Consent, Philip Bobbitt noted that Sultan Bashiruddin Mahmood, a scientist of the Pakistan Atomic Energy Commission, had met Osama bin Laden in Kabul in August 2001. Mahmood is said to have disclosed that bin Laden "insisted that he already had sufficient fissile material to build a [nuclear] bomb, having obtained it from former Soviet stockpiles through the Islamic Movement of Uzbekistan." In 2003, A. Elizabeth Jones, the U.S. assistant secretary of state for Europe and Eurasia, testified on the threat of terrorism in Central Asia before the U.S. House of Representatives' subcommittee on the Middle East and Central Asia, arguing that the greatest threats were the IMU, and Hizb ut-Tahrir. Jones said that despite the death of Namangani, the "IMU is still active in the region -- particularly in Kyrgyzstan, Tajikistan, Uzbekistan, and Kazakhstan -- and it represents a serious threat to the region and therefore to our interests." Mahmadsaid Juraqulov, head of the anti-organized crime department in the Interior Ministry of Tajikistan, told reporters in Dushanbe on 16 October 2006 that the "Islamic Movement of Turkestan is the Islamic Movement of Uzbekistan," and that Uzbek secret services manufactured the change in name. Juraqulov also said that the IMT was not a major security threat to Tajikistan or Kyrgyzstan. "Everyone knows that it is in Uzbekistan that [the IMU] wants to create problems. For them, Tajikistan and Kyrgyzstan are just regrouping bases they're trying to reach." Some analysts have asserted that rather than the image of a unified IMU under Namangani and Yuldeshev, it has always been an organization consisting of two poles – the radical, spiritual (Yuldeshev) and militant, criminal (Namangani).