Reply #151: actually 1988 when it was made a formal PLO position

[Douglas Carpenter]

Until 1993 Israel still would not talk to the Palestinian leadership.

Informally much earlier than that the PLO had attempted to communicate the message that they wanted talks with Israel. And this was a unilateral non reciprocated move. Israel did not then nor does it now recognize a Palestinian state

way back in 1974 the PLO officially proposed a democratic and secular state in which all ethnic and religious groups would be treated equally.

http://www.umich.edu/~iinet/worldreach/assets/docs/israeli-palestinian_conflict/studentlesson4.html

Nonetheless, certainly by 1993 Israel could have moved toward a settlement but they choose expansionism instead while making numerous moves that made a viable two-state solution considerably less viable.