A Western intelligence source told The Times: “They [ISIS] are the strongest horse now.
“Isis will drain a lot of the support for Boko Haram. “
Although Shekau has sworn allegiance to the Islamic State in the past, the extremist organization has found that its actions have alienated too many of the Nigerian population.
By killing Shekau, intelligence agencies believe that several militant groups in five Sahel countries, including Mauritania, Burkina Faso, Mali, Niger and Chad, could rally to the leadership of ISWAP.
French troops, which provided military aid to Mali since 2013, are now seeking to withdraw from the region following a military coup.
Earlier this month, Emmanuel Macron announced his intention to withdraw more than 5,000 troops from the country, saying “the time has come”.
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“This could involve a more consolidated presence of Isis and the spread of her influence. “