The trend began in the United States of America in the first few decades of the 20th century when "an increasingly large section of Americanized Jewish opinion began to shift away from anti-Zionism (...) either to pro-Zionism or non-Zionism. (...) The non-Zionists were willing to offer the fledgling Jewish homeland fiscal and diplomatic counsel, not for their own benefit or spiritual comfort but for those Jews who chose to reside there."
"There is a marked difference between non-Zionism and anti-Zionism. A non-Zionist may challenge the theoretical underpinning of the concept of an 'ingathering of the exiles' in an independent Jewish State. If Jewish, he will not choose to live in Israel, nor will he approve of the notion of other Jews living there (...) but anti-Zionists do not find it sufficient to be dissatisfied with a decision made and implemented a long time ago. They are not content with a critical assessment of the situation confined to an historical (and, accordingly, a theoretical) framework. Not merely do they have an adverse opinion about the establishment of Israel in the past, but they contest the legitimacy of Israel as a State in the present time and the future.