Despite the ceasefire, Russian troops are advised to be vigilant.
If there is no progress, the US threatens to leave mediation.
According to Moscow, if both parties observe the ceasefire, forces will follow it.
A unilateral Easter ceasefire in Ukraine was announced by Russian President Vladimir Putin, who gave his troops orders to cease fighting from 6 p.m. Moscow time (1500 GMT) on Saturday until the end of Sunday.
President Volodymyr Zelenskiy claimed that the fact that Ukrainian air defense units were fending off a Russian drone strike on Saturday demonstrated Moscow’s real stance on Easter and human life.
“The Russian side declares an Easter truce based on humanitarian concerns. During a meeting in the Kremlin, Putin informed his military chief, Valery Gerasimov, that “I order a stop to all military activities for this period.”