MOSCOW — The Kremlin said on Monday that preparations were under way for a summit between Presidents Vladimir Putin and Donald Trump, following talks in Moscow with US envoys Steve Witkoff and Jared Kushner on ending the war in Ukraine.

Kremlin spokesman Dmitry Peskov told reporters that the weekend discussions had been substantive and that the two sides had narrowed differences on a framework for halting hostilities. Putin said on Saturday that his contacts with the American negotiators had been beneficial and that Trump was continuing to try to help resolve the conflict.

The meetings came after Putin claimed that no Russian strikes on Kyiv had been carried out since midnight, a claim Ukrainian officials treated with caution. Washington has pushed for a ceasefire arrangement that Ukrainian President Volodymyr Zelensky has insisted must not be negotiated over Kyiv's head.

European governments reacted warily to the prospect of a bilateral summit. Officials in Berlin and Paris warned that any deal excluding Ukraine and the European Union would be rejected. A spokesperson for the European Commission reiterated that sanctions on Russia would remain until a just peace was reached.

The diplomatic push unfolded as 164 countries backed a new world map resolution at the United Nations, underscoring Washington's difficulties in aligning allies behind its foreign policy positions.