PLO talked about the destruction of Israel before 1967. They took the name palestinian from the jews and created a nation. They denounced the "palestinain clami to the west bank and gaza in their charted article 24. Arafat was the most dangerous things that happened to Israel not including Israels corrupt leadership he called ofr jihad against Israel and the destruction of the state until the day he died and never talked of peace more then a few times in Arabic and this was only when watched by the world.
Hamas' Khaled Meshal met with Saeb Erekat in Qatar (Haaretz)
from the article: Islamic Movement head: J'lem destined capital of caliphate