This market will resolve to "Yes" if there is an official ceasefire agreement, defined as a publicly announced and mutually agreed halt in military engagement, between Israel and Hamas on or before Oct 31, 2023, 11:59 PM ET. The resolution will be based on official government announcements from both Israel and Hamas, or reports from credible media sources. An official ceasefire agreement requires public recognition by both parties. Any form of informal, unratified, or verbal agreement will not be considered an official ceasefire. The ceasefire must last 48h and to have begun before the resolution date (if the ceasefire begins on Oct 30, for example, this market would resolve to "Yes" if the ceasefire continues for 48h).