The Swiss Islamic activist Tariq Ramadan has been invited by Griffith University to be the keynote speaker at its conference opening in Brisbane today. The fact that Australia is allowing Ramadan to enter the country at all will raise eyebrows in security circles elsewhere. Ramadan is the grandson of Hassan al-Banna, founder of the Muslim Brotherhood: the spiritual backers of al-Qa’ida and Hamas and whose goal is to Islamise the world. While it is, of course, unfair to tar someone with his grandfather’s views, there is ample reason to think that in the case of Tariq Ramadan the apple has not fallen far from the tree. Ramadan has been banned from entering the US because of his alleged association with extremists. The Geneva Islamic Centre, with which he is closely associated, has been linked to terrorists of the Algerian FIS (Islamic Salvation Front) and the GIA (Armed Islamic Group). A Spanish police report claimed that Ahmed Brahim, an al-Qa’ida leader jailed in Spain, was “in frequent contact” with Ramadan, a claim he has denied. Yet the Swiss activist has not only been allowed into Britain but is ensconced at St Anthony’s College, Oxford as a research fellow and is much lionised by the British establishment, appearing at security seminars on Islamism and even serving as an adviser to the British Government on tackling Islamic extremism. So how to explain this wild divergence of views about Tariq Ramadan? And does Australia have cause to be concerned?