Will Russia & Ukraine declare a ceasefire by EOY?

[From ACX Mini-Grants: Impact Markets] This market will resolve to "Yes" if there is an official announcement of a ceasefire agreement, regardless of the ceasefire's length, between Russia and Ukraine by December 31, 2023, 11:59 PM ET. Otherwise, this market will resolve to "No". The ceasefire agreement must be acknowledged and accepted by both the Russian and Ukrainian governments to be considered valid. The ceasefire must apply to the entire territory of Ukraine as defined by the UN, including all regions currently involved in the conflict, to be considered valid. The specific date that the ceasefire agreement will take effect is not relevant to the resolution of this market. The only requirement is that the agreement must be announced before this market's end time.