The CAC 40 index in Paris is experiencing fluctuations amid renewed optimism for Europe and concerns over a potential trade war with the U.S. Recent positive developments include a significant German spending plan and anticipated support from Brussels, which have energized investors.As the European summit approaches, the European Central Bank is expected to cut rates while hinting at a pause in monetary easing. Technically, the CAC 40 could face a retracement, with key levels at 8250 points for bullish sentiment and 7800 points as a potential support for buying opportunities.