From the Concise Oxford English Dictionary (9th Edition)
Zionism n. a movement for (originally) the re-establishment and (now) the development of a Jewish nation in what is now Israel. Zionist n. & adj.
From that definition, I would take it that every patriotic Israeli citizen is Zionist, but every Zionist is not necessarily an Israeli citizen. Although, the vast majority of Zionists are likely to be Jewish this also need not be so in every case - witness the non-Jewish politicians around the world currently proclaiming that they want to address the Israel/Palestine situation, thereby involving themselves in the 'development of a Jewish nation in what is now Israel.'
SASless, I think that you are looking for insult in Jacko's posts where none exists and prescribing a motivation on unsound foundations.