Firefighters in southwest France battled an uncontained wildfire four times the size of Paris on Wednesday as temperatures were forecast to reach 40 degrees Celsius (104 degrees Fahrenheit), threatening to turn a calm night into only a brief reprieve. Authorities in the Gironde region said the blaze had not spread overnight, but rising heat and afternoon winds could revive smouldering hotspots, carry embers across firebreaks and open new fronts beyond crews’ reach. At the command centre in Lège,...