Gulmurod Khalimov, a former Tajik military officer who is now the Islamic State group's chief recruiter, has become one of the world's most wanted terrorists. The United States is offering a $3 million reward for his capture.

Khalimov, 41, a former Tajik special forces colonel who trained in the U.S. and Russia, is now head of armed units and in charge of military operations for IS, according to Western intelligence reports. After an airstrike last week killed Islamic State's Abu Mohammed al-Adnani, analysts said Khalimov was elevated to serve as second in command to the overall IS leader, Abu Bakr al-Baghdadi.

"This further highlights the Islamic State's leadership wishes for the group to be perceived as an entity in which people from anywhere in the world may fill important roles," said Michael S. Smith, a counterterrorism adviser to members of the U.S. Congress.

Khalimov, who is believed to operate from Syria, is driven by a radical Muslim ideology, analysts say.

"In one of his video messages he blamed Tajik officials for suppressing religious freedoms, forcing Muslim men to shave their beards and removing veils from women's heads," Esfandiar Adineh, an analyst based in Dushanbe, told VOA.

New focus on Central Asia?

The Tajik commander's increasingly visible role could expand IS operations beyond Syria and Iraq, experts say.

"With his capabilities and trainings, combined with increased pressure on IS in the Middle East, there is a faint possibility that he may look more toward creating problems in Central Asia in a desperate attempt to remain relevant," said Ethan Wilensky Lanford, an expert on Countering Violent Extremism at Rice University in Houston, Texas.

Central Asia has proven to be fertile recruiting ground for IS, whose ranks now include thousands of Asian fighters in Iraq and Syria. Russia has long been aware of the IS recruitment process, and worries that a stronger IS presence in Central Asia would be a growing threat to Russian national security.

"His promotion is also strategically valuable as this can bolster [IS] foreign recruitment efforts," Smith said of Khalimov. He is said to be the organizer of a radical group known as the Cyrillic Jihadists — Russian speakers who come from the former Soviet republics.

"These fighters are very different from others in terms of discipline and military training, compared to their Arab and African counterparts," said Salem al-Hammoud, an activist who fled to Turkey from the IS-controlled Syrian city of Deir Ezzor.

Islamic State's leaders appoint the Central Asians to important posts, Hammoud says, "because they are tough and they do not sympathize with locals." And since they do not mingle with other jihadists, he added, IS leaders view them as "a very reliable, resilient force."

Khalimov is believed to be directing IS recruiting operations from Syria, analysts say.

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