Uzbekistan, which already worked closely with the United States on security and counterterrorism programs before September 11, has played an important role in supporting the Coalition against terrorism. In October, the United States and Uzbekistan signed an agreement to cooperate in the fight against international terrorism by allowing the United States to use Uzbek airspace and an air base for humanitarian purposes. In December, to facilitate the flow of humanitarian aid into northern Afghanistan, Uzbekistan reopened the Friendship Bridge, which had been closed for several years. Tashkent has issued blocking orders on terrorist assets, signed the UN Convention on the Suppression of the Financing of Terrorism, and says that it is a "full-fledged" party to all UN antiterrorism conventions.
Uzbekistan experienced no significant terrorist incidents in 2001 but continued actively to pursue and detain suspected Islamic extremists. The Islamic Movement of Uzbekistan (IMU) participated in combat against US-allied Northern Alliance forces during the early stages of the war against terrorism, particularly in the area of Kunduz. Although the IMU suffered significant losses during this campaign, there is information that the IMU may still maintain a capability to infiltrate into Uzbekistan for possible attacks. Uzbekistan continued to confront increased Hizb ut-Tahrir activity. In October, the group distributed leaflets claiming that the United States and Britain have declared war on Islam and urged Muslims to resist Uzbekistan's support for the US-led Coalition.