Of course, the overwhelming majority of Muslims are not terrorists or sympathetic to terrorists. Equating all Muslims with terrorism is stupid and wrong. But acknowledging that there is a link between Islam and terror is appropriate and necessary.

Free speech is the bedrock of liberty and a free society. And yes, it includes the right to blaspheme and offend.

Unlike the United Kingdom or the Commonwealth, the umma, or Muslim community, has no symbolic leader, let alone a formal one.

I do not believe in God, angels and the hereafter.

The idea that if people are just friendly and demonstrate they want peace, that will be answered with good will - that is really naive.

This was not an attack by a mentally deranged, lone-wolf gunman. This was not an 'un-Islamic' attack by a bunch of thugs - the perpetrators could be heard shouting that they were avenging the Prophet Muhammad. Nor was it spontaneous. It was planned to inflict maximum damage, during a staff meeting, with automatic weapons and a getaway plan. It was designed to sow terror, and in that it has worked.

Many people in Europe and the U.S. dispute the thesis that we are living through a clash of civilisations between Islam and the west. But a radical minority of Muslims firmly believes that Islam is under siege, and is committed to winning the holy war it has declared against the West.