"Al-Qaeda affiliates remain the dominant terror threat in some regions, such as Somalia and Yemen, a fact demonstrated by a continuous stream of attacks and foiled operations," said the report.
In West Africa and South Asia, Al-Qaeda-linked groups pose as serious a threat as IS affiliates who "currently remain unable to reach a dominant position," it said.
UN member-states however see potential for linkups between Al-Qaeda and IS groups to support each other, warning that in some regions this could be a new threat, the report said.
The Islamic State lost its self-declared caliphate in Syria and Iraq last year but Al-Qaeda "remained remarkably resilient," said the UN monitors.
In Syria, the Al-Nusrah Front "remains one of the strongest and largest Al-Qaeda affiliates globally," with its fighters "using threats, violence and material incentives" to absorb smaller armed groups.
Al-Nusrah commands between 7,000 and 11,000 fighters, including several thousand foreigners, and has its main power base in Syria's Idlib province.
In Libya, IS remains intent on regaining a foothold following the loss of Sirte and has reinforced its presence with fighters returning from Iraq and Syria, the report said.
Fighters from Boko Haram, which has expanded its reach from northern Nigeria, are maintaining small cells in Libya who could then move on to other regional countries.
"Member-states assessed that there is a potential for the transfer of leaders from ISIL in Libya to other conflict zones in West Africa and the Sahel region, including Mali," said the report.
(This story has not been edited by Business Standard staff and is auto-generated from a syndicated feed.)
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