Tajik President Emomali Rakhmon praised his country's security forces April 18 for what he deemed a successful operation in the Nurobod district in eastern Tajikistan on April 15. The operation resulted in the deaths of 15 militants, reportedly including opposition leader Abdullah Rahimov, also known as Mullah Abdullah. If confirmed, Abdullah's death would significantly affect the security situation in Tajikistan, which is a key factor in the stability of the wider Fergana Valley region and has important implications for Russia's presence in Central Asia. Security sweeps have been ongoing for several months in Tajikistan. This latest operation is notable because of the reports of Abdullah's death. Abdullah was a key commander of the United Tajik Opposition (UTO), an alliance of democratic and Islamist forces, during Tajikistan's 1992-1997 civil war. Abdullah never accepted the peace treaty signed between the Rakhmon-led Tajik government and opposition forces represented by the UTO at the end of the civil war. He did not take a place in the government, as many members of the UTO did in exchange for laying down their arms. (click here to enlarge image) Instead, Abdullah allegedly fled to Afghanistan and became a key member of the Islamic Movement of Uzbekistan. Rumors of Abdullah's reappearance in the Rasht Valley, an opposition stronghold in eastern Tajikistan, emerged last year. These voices coincided with an uptick in violence and militant activity, in the Rasht Valley and elsewhere in Tajikistan, following a high-profile jailbreak from a Dushanbe prison in August 2010. Abdullah, a longtime target of the Rakhmon government, became the Tajik government's most-wanted man. Among other charges, authorities accused Abdullah of participating in a September 2010 attack on a Tajik military convoy in the Rasht Valley that killed dozens of Tajik troops. Abdullah's reported death comes during a period of demonstrable progress for Tajik operations in the Rasht Valley, a particularly challenging theater for Tajik security forces. Several of Abdullah's associates and former opposition leaders have been killed, while other opposition leaders and opponents of the Tajik government have switched sides to assist Dushanbe. For instance, on April 13, Tajik Internal Affairs Minister Abdurahim Qahhorov announced that Shoh Iskandarov, an important former opposition commander of the UTO, joined Tajik police forces as deputy head of the Internal Affairs Directorate for the Rasht group of districts. Far fewer military casualties have been reported during raids in the first months of 2011 compared to the last few months of 2010 (though reporting is far from a transparent process, and the government has censored Tajik media coverage in the area). Despite these signs of improvement, several issues remain for Dushanbe. This is not the first time Abdullah's death has been reported. Official claims of the death of one of Abdullah’s allies, anti-government commander Alovuddin Davlatov, have been disputed, and Davlatov appeared in a video just days after the government said he was killed (though he was likely killed by security forces shortly thereafter). Also, as STRATFOR previously mentioned, Tajikistan is one of the most at-risk countries in the former Soviet Union for instability. Continuing security sweeps in the Rasht Valley, combined with a countrywide government-led religious crackdown, have created a tense atmosphere more conducive to unrest than Tajikistan has seen in years. Adding to these issues are recent border tensions between Tajikistan and Kyrgyzstan, which has seen its own rise in violence and instability in the past year. Meanwhile, a mistrustful Uzbekistan is closely monitoring developments in the Fergana Valley. A return to civil war in Tajikistan still cannot be ruled out, though it does not appear likely at this point. There are many indications that the threat to the Tajik government emanates more from political opponents of Rakhmon than from transnational terrorists. However, if Abdullah was in fact killed, his death would be an important victory not only for the Tajik government but also for Russia. Moscow has been increasing its military presence in Tajikistan in recent months, and according to STRATFOR sources in Dushanbe, the Russians have been intensifying their intelligence capabilities in Tajikistan as well. Sources report that the targeting of Abdullah was a product of joint intelligence between the West and Russians, as the West has kept watch on Abdullah since his time in Afghanistan. This likely made it easier for Tajik forces to carry out the strikes and kill Abdullah, if reports of his death are accurate. However, confirmation of Abdullah's death would also raise several concerns, particularly regarding the identity of his successor and how militant or opposition forces might respond. The security situation in Tajikistan, and specifically in the volatile Rasht Valley, is a key factor in the stability of the wider Fergana Valley region and bears important implications for Afghanistan, where Russia has been increasing its cooperation with the United States and the West. Therefore, it will be important to monitor the level of violence in Tajikistan in the coming weeks and months and to gauge the degree of Russia's involvement in maintaining security.