Following the election of President-Elect Donald Trump, the leader of the jihadist group Boko Haram, Abubakar Shekau, has issued a warning to Trump that “the war has just begun” against the West.

Abubakar Shekau in an hour long audio message uploaded on YouTube late Sunday said “do not be overwhelmed by people like Donald Trump and the global coalition fighting our brethren in Iraq, Syria, Afghanistan and everywhere. We remain steadfast on our faith and we will not stop.  To us, the war has just begun.”

Boko Haram, which last year pledged allegiance to the Islamic State group, has been in the grip of a power struggle since late last year. The IS high command said in August that Shekau had been replaced as leader by Abu Musab al-Barnawi, the 22-year-old son of Boko Haram’s founder Mohammed Yusuf. Shekau however claims he is still in charge, as rival factions vie for control.

During a visit to Nigeria in August, US Secretary of State John Kerry congratulated the government for reclaiming swathes of territory and releasing thousands of hostages from Boko Haram, while warning against the use of excessive force to fight extremists.