Polish Foreign Minister Radosław Sikorski said Wednesday he was not optimistic about the prospect of peace negotiations between Russia and Ukraine, adding that Moscow continues to reject ceasefire proposals and has not softened its aims. Sikorski was speaking in Latvia, where he took part in a meeting with the foreign ministers of Latvia, Ireland, Finland and Hungary, with talks covering Ukraine, EU enlargement, Russian hybrid activity and the Middle East.JOIN US ON TELEGRAMFollow our coverage of the war on the @Kyivpost_official. His comments come days after US envoys Steve Witkoff and Jared Kushner traveled to Moscow and then Kyiv in a renewed peace push, meeting Vladimir Putin before holding talks with Volodymyr Zelenskyy. The Moscow talks produced no breakthrough, while Kyiv said it was ready to resume trilateral negotiations with the US and Russia. Speaking alongside Latvian Foreign Minister Baiba Braže at the Ādaži military base on Wednesday, Sikorski said: “Putin still believes he has two cards to play—mobilization and a harsh winter. “So we must ensure that Ukraine’s cards—its ability to strike refineries and its ability to hold the front line—continue to be strengthened.” Sikorski added, “The bigger picture is that Russia does not understand the psychology of democracies. We are slow to mobilize. But once we do, we can mobilize enormous resources.” He also said Poland and Latvia faced many of the same Russian threats, including airspace violations, migration pressure, and sabotage.