"Having suffered a military defeat in Syria and Iraq, international terrorist organizations are regrouping their forces and are directing them beyond the Middle East," Bortnikov said.
"Afghanistan is becoming a key center of concentration of militants, as there are already Daesh bases there, then the militants have the opportunity to infiltrate into the territory of the CIS countries," he said at a meeting of the council of chiefs of the CIS security agencies and special services.
The CIS (Commonwealth of Independent States) has blocked 11 corridors used by the terrorists to transfer recruits to the area of military operations in Syria, Bortnikov said, adding that international terrorists had been changing their tactics.
Terrorists in Central Asia and the Middle East, who are trying to use these regions as a springboard for expansion, pose a threat to the CIS, the welcoming message written by Vladimir Putin to the participants of the meeting reads as quoted by Bortnikov.
"It is obvious that the current situation in the world requires us to seek new, more effective ways of responding to global challenges and threats. The main danger for the CIS countries comes from international terrorist organizations operating in Central Asia, the Middle East and North Africa," the message reads.
"Terrorists are trying to use the regions as a springboard for expansion, recruit and train new militants here, send them to other states to destabilize the situation there," it added.
The 43rd meeting of the council of chiefs of CIS member states' security agencies and special services is taking place in Moscow this Tuesday.
At the same time, Russian Central Military District troops commander Alexander Lapin, who is an official visit to Tajikistan, which is a part of the CIS, said that the armed forces of the two countries should be ready for any development of events, including a negative scenario, in Central Asia after the Daesh defeat.
"Recently, a Russian Armed Forces group, jointly with the Syrian army, completed the defeat of the most combat effective forces of the Islamic State [Daesh} in the Middle East. Our soldiers and officers are returning home. At the same time, it is too early to talk about the end of the fight against the international terrorist threat," Lapin said.
"Militants, having been repelled in Syria, are increasing their presence in Afghanistan. It is a trained, well-equipped and motivated opponent who must not be underestimated," he said.
The meetings came in wake of the pullout of Russian troops from Syria as the main terrorist hotbeds — located mostly along the Euphrates River — have been eliminated as the result of the two-year operation against the terror group, launched upon Syrian president Bashar Assad's request.
However, Joint Task Force Operation Inherent Resolve's press office that it wouldn't follow Moscow's example and that more fighting would have to take place to eliminate the remaining pockets of Daesh terrorists in the Middle Euphrates River Valley.