"Do not ask for anyone's advice and do not seek anyone's verdict. Kill the disbeliever, whether he is civilian or military, for they have the same ruling. Both of them are disbelievers." An image allegedly shows members of Islamic State, including Abu Omar al-Shishani (left) and ISIL sheikh Abu Mohammed al-Adnani (right), whose picture was blurred from the source to protect his identity, at an unknown location in Iraq or Syria. Credit:AFP Over 11 pages, the statement unrestrainedly urges followers towards martyrdom, telling them they are "like predatory warriors" who "face death with bare chests". It comes just days after police smashed an alleged plot in Sydney to kill random Australians on camera and also as world leaders prepare to meet at the United Nations in New York to discuss how to combat the problem of foreign fighters travelling to Iraq and Syria. Al-Adnani is regarded as the most authoratitive spokesman at Islamic State, also known as ISIL. The statement represents the most concrete threat yet to Australia by the group's leadership.

A spokewoman for Prime Minister Tony Abbott said on Monday that the statement is considered to be an authentic statement from the terror organisation. Police leave with what appears to be a sword after a raid in Sydney on Thursday. Credit:Peter Rae "Australian agencies regard the statement issued today by ISIL calling for attacks against members of the international coalition, including Australians, as genuine," she said. "ISIL will claim that our involvement in this international effort is the reason they are targeting us, but these people do not attack us for what we do, but for who we are and how we live." Mr Abbott opened question time on Monday with a speech warning that some freedoms for Australians may need to be restricted to prevent attacks from terror groups.

Chilling threats Disturbingly, the statement attributed to al-Adnani also offers itself as a final declaration, telling followers they need no further permission from a Muslim cleric. It calls US President Barack Obama a "mule of the Jews" and Secretary of State John Kerry an "uncircumcised old geezer". In apocalyptic tones, the message goes on to declare: "O soldiers of the Islamic State, be ready for the final campaign of the crusaders. Yes, by Allah's will, it will be the final one." The statement threatens not just to beat back any military campaign in Iraq and Syrian but also to go on the offensive, even if it takes generations.

"We will conquer your Rome, break your crosses, and enslave your women, by the permission of Allah, the Exalted," it says. "If we do not reach that time, then our children and grandchildren will reach it, and they will sell your sons as slaves at the slave market." It focuses most of its fury on the United States but mentions Australia three times, urging Islamic fighters in various countries who are American allies to take up arms. "O America, O allies of America, and O crusaders, know that the matter is more dangerous than you have imagined and greater than you have envisioned," it says. "We have warned you that today we are in a new era, an era where the State, its soldiers, and its sons are leaders not slaves. Being killed – according to their account – is a victory. This is where the secret lies." It asks of Islamic State followers: "Why is it that the world has united against you? … What threat do you pose to the distant place of Australia for it to send its legions towards you? What does Canada have anything to do with you?" The statement goes on to say that anyone who refuses to recognise the Islamic State's self-declared caliphate is mocking the Prophet.

Loading It calls on followers to "fear not the swarms of planes, nor ballistic missiles, nor drones, nor satellites, nor battleships, nor weapons of mass destruction". Follow us on Twitter