Russia took weeks to present Ukraine with a “memorandum” setting out its conditions for a ceasefire, as well as key guidelines for a comprehensive treaty to end the more than 3-year-old war. To practically no one’s surprise, it’s a list of the Kremlin’s longstanding, maximalist demands that Kyiv and its Western allies see as nonstarters. Ukraine had set its negotiating stance before Monday’s direct peace talks in Istanbul, emphasizing its readiness to declare a 30-day ceasefire immediately without preconditions that was proposed by U.S. President Donald Trump. Kyiv reaffirmed its refusal to abandon a bid for NATO membership and rejected...