Israelist

Israelists emphasize the implementation of Zionist, pro-Jewish systems and the creation of a greater Jewish state, and rejection of non-Zionist voices—particularly Western or universal economic, military, political, social, or cultural.

He was a staunch Israelist.

Israelism

The belief that support for Israel and Zionism should influence, dominate, and infiltrate political systems around the world.

He was a big proponent of Israelism.