Ukrainian President Volodymyr Zelenskyy assured the Dutch Parliament on Tuesday that the ongoing talks to end the war with Russia are "the most intense and focused since the beginning of the conflict," and that "an agreement could be reached within days." However, he also warned that any peace agreement must be based on clear rules and thorough accountability. "Every detail matters," he asserted. And he emphasized that there can be "no reward for Russian aggression." At this stage, one of the most relevant aspects of the negotiations, what Zelenskyy called "details," are the security guarantees that Ukraine would obtain in exchange for some hypothetical concession to Donbas, which Russia wants to be the complete withdrawal of Kyiv's troops from 25% of the territory. But giving up on this is politically impossible for Zelenskyy. In this regard, and after the intense negotiations of the last few hours, especially the Berlin summit this MondayAccording to various British and American media outlets, the United States has warned Ukraine that it must accept Washington's offer of "platinum-level" security guarantees or risk losing them. In practice, this amounts to a new ultimatum from President Donald Trump. According to information that has been trickling out, Washington is proposing legally binding guarantees, comparable to NATO's Article 5, with key European support, to deter any future Russian aggression. This would translate into the presence of Western troops in Ukraine, but in no case US troops. The security guarantees are presented as the main incentive for reaching an agreement that Trump considers the most advanced to date. This would have motivated Zelensky's renunciation of one of his central demands: Ukraine's entry into NATOIn any case, any agreement Kyiv strikes with its European allies and Washington would subsequently need Vladimir Putin's approval. And if the guarantees involve a Western presence in Ukraine, the No The Russian president's support is guaranteed.