It's an odd sort of petition, more of a manifesto. It starts out as an article, and winds up with a series of points such as you might find in a petition. So in signing it you aren't just agreeing to those six points, you are agreeing to the preliminary article with its analysis which appears to exclude some of the most appalling types of terrorism in the present world.

I am wholly and unreservedly against all kinds of terrorism. In the last resort it seems to me that this manifesto is not.