European blue-chip stocks edge lower as investors pause ahead of potential progress on US-Iran negotiations. Multiple reports attribute the cautious market tone to expectations surrounding a Middle East peace or deal effort, with trading sentiment remaining tied to developments in the talks. In this context, oil prices are described as falling back, reflecting a shift toward lower immediate energy-cost expectations while negotiations continue. The news flow is characterized less by concrete agreement details and more by market anticipation, with investors monitoring headlines for signs of movement that could alter risk expectations and sector outlooks. Overall, the reports present a picture of muted share performance driven by uncertainty about the timing and outcome of any US-Iran deal, alongside softer oil prices. The combined coverage emphasizes that both equities and energy markets react to perceived changes in prospects for settlement, but no definitive agreement is reported in the cited material.