Kremlin officials have remained silent, while lower-ranking figures dismiss the proposed meeting. Putin initially proposed renewed Istanbul talks on 11 May.
Baltic defense ministers warn Moscow plans to rearm and redeploy forces northward after a Ukraine ceasefire, heightening security risks for NATO's northeastern border.
American negotiators are holding separate talks with both Ukrainian and Russian delegations in Saudi Arabia, seeking a ceasefire by 20 April amid Putin's maximalist demands.
Chinese diplomats approached EU officials about joining Ukraine peacekeeping forces, potentially increasing Russian acceptance of an international mission.
France, Germany, and UK are moving toward seizing the frozen Russian Central Bank assets to Ukraine for military support if Russia violates a ceasefire.