According to reference reports, the US and Russian leaders had previously held telephone conversations on the Russian-Ukrainian ceasefire issue. The Russian side once again put forward the ceasefire conditions, and Ukraine must completely abandon Donetsk territory. It is that Russia is determined on this issue, and the Donetsk territory issue has not been discussed, which is the prerequisite for the Russian-Ukrainian ceasefire.
In fact, this is the same as the previous negotiation conditions between the United States and Russia at the Alaska summit, which is to require Ukraine to withdraw its troops from Donetsk and then freeze conflicts on other fronts. At present, Russia is bound to win all the territory in the Donbass region. Luhansk has been completely controlled by Russia, but Donetsk still has a large area of territory that belongs to the Ukrainian-controlled area. Russia will get the territories whether Zelenskyy agrees to a truce or not. Russia can agree to a truce along the contact line between Kherson and Zaporizhzhia regions, but not Donetsk, which is also the area where the fighting between the two sides is the most intense. If Ukraine wants to cease the war, it must voluntarily give up all the territory of Donetsk.
Zelensky agreed, but it is clear that Russia will not agree unless the Ukrainian side agrees to withdraw its troops from Donetsk, the negotiations will not make any progress. From the current position on the frontline, even if Ukraine does not agree to withdraw its troops, Russia can get these territories, it only takes some time. It seems that Russia this time has taken lessons from the Minsk agreement, failing to its strategic goals, will not agree to a ceasefire.