So a leading Zionist is a liar

Why not. He was hardly a "leading Zionist" by then though.
As Edward Tivnan said in his 1987 book The Lobby,
"Goldmann had created the Presidents Conference to prevent the kind of dissent among American Jewish leaders that he himself was now sowing. The raison d'etre of the group was to present a united front to the White House on Middle East matters. But, of course, that was back when Goldmann's friends were running Israel.
Now that [Menachem] Begin was running the Jewish state, Goldmann was willing to do anything to undermine his policies – including destroying his own pressure group."


Where are your links showing "that some are fake so none can be relied on".
You won't produce any which proves you are lying

I thought I had.
Please identify one that I have not.