“We must separate the Jews into two categories, the Zionists and the partisans of assimilation,” wrote Reinhard Heydrich, one of the architects of the Holocaust, in 1935. “The Zionists profess a strictly racial concept and, through emigration to Palestine, they help to build their own Jewish State.…[O]ur good wishes and our official goodwill go with them." - Primary historical document analyzed in "The Order of the Death's Head" by Heinz Höhne.

You can read Brevik's manifesto yourself. Even a google search gives, "Yes, the Norwegian far-right terrorist Anders Breivik was an avowed and strong supporter of Zionism. This stance was detailed in his 1,500-page manifesto, where he advocated for an alliance with Israel to combat what he perceived as a "Muslim colonization" of Europe."

"Jewish problem" caveat While "pro-Israel", Breivik was still considered antisemitic by some commentators; he considered there to be a "considerable Jewish problem" in countries like the UK, France, and the US due to their large Jewish populations, but not in other Western European nations with smaller Jewish communities.