India, May 6 -- The major European stock markets finished higher again on Wednesday, thanks to growing optimism about a potential peace deal between the United States and Iran.A massive plunge in crude oil prices and easing fears of fuel-led inflation also boosted market sentiment as the markets opened higher and remained firmly in the green throughout the day.Strong early performances from U.S. stocks and solid corporate earnings also lifted market sentiment considerably.Germany's DAX surged 516.99 points or 2.12 percent to finish at 24,918.69, while London's FTSE spiked 219.55 points or 2.15 percent to close at 10,438.66, the CAC 40 in France rallied 237.11 points or 2.94 percent to end at 8,299.42 and the SMI in Switzerland jumped 231.09...