In an interview with PBS Frontline:

“In human history, when your land is occupied you have only three options. Either you negotiate to restore your rights, you fight to restore your rights, or a combination of fighting and negotiating…We practiced negotiation, and Mr. Saeb Erekat [chief negotiator for the PLO], to this moment, is still talking about how negotiation is our strategic goal. They’ve spent since 1991 negotiating to nothing. When we resorted to an armed struggled, we succeeded in pushing the Israelis at least from the Gaza area. If you have a solution to push the Israelis out of the rest of our occupied territory, then it’s the time for negotiation. But in the meantime, the Israelis use negotiation to waste our time.” Frontline, “Extended Interviews Mahmoud Zahar,” PBS, May 9, 2006, https://www.pbs.org/frontlineworld/stories/palestine503/interviews_zahar.html.