In its latest propaganda video, Islamic State reveals its new spokesperson – a 17-year-old boy from Sydney, Australia.
In the short clip, the young militant addresses world leaders, including United States President Barack Obama and Australian Prime Minister Tony Abbott.
"To the leaders, to Obama, to Tony Abbott I say this: These weapons that we have, these soldiers, we will not stop fighting, we will not put down our weapons until we reach your lands, until we take the head of every tyrant and until the black flag is flying high in every single land," he said.
The speaker, identified in the video as Abu Khaled, is believed by Australian security agencies to be Abdullah Elmir.
He is an Australian citizen who reportedly went missing from his home in Sydney earlier this year in June.
"Bring every nation that you want to come and fight us. It means nothing to us. Whether it's 50 nations or 50,000 nations, it means nothing to us," he challenges Obama later in the clip.
"Bring your planes. Bring everything you want to us. Because it will not harm us. Why? Because we have Allah."