Abu Bakr al Baghdadi's video appearance is an attempt to revive the morale of a group that has suffered heavy losses and is looking to rebrand itself.
The group's leader Abu Bakr al Baghdadi in the video acknowledged defeat in the group's last stronghold in Syria and discussed the Easter Day bombings in Sri Lanka, which killed over 250 people and for which the group claimed responsibility.
Kang has been detained without bond, and his lawyer claims that he suffers from mental illness. He added that FBI agents exploited him in a "sting" operation leading to his arrest.
Baghdadi's death, which has been frequently reported since he declared a caliphate from a mosque in the Iraqi city of Mosul in 2014, is one of the biggest blows yet to Daesh, which is trying to defend its shrinking territory in Syria and Iraq.
Iranian state agency IRNA quoted a representative of the Quds force as saying that the elusive leader of Daesh was dead but later the statement was withdrawn.
Daesh is accused of blowing up the Grand Al Nuri Mosque, where the terrorist group's leader Abu Bakr al Baghdadi proclaimed himself "caliph" in 2014.
US-backed Iraqi forces encircled a mosque in Mosul's Old City where Daesh leader Abu Bakr al-Baghdadi declared a self-style "caliphate" in 2014.
The offensive to retake the Old City was launched on Sunday but progress has been slow as Iraqi forces encounter stiff resistance from Daesh members.
Daesh fighters are moving house to house through holes knocked in inner walls to avoid air surveillance. It is a battle that is being fought street by street as Iraqi forces attempt to retake Mosul.
One has Donald Trump's ear and the other leads the Daesh terrorist organisation. But both men share a dark, apocalyptic vision for the future.
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