A wave of destructive wildfires is sweeping across southern Europe, forcing mass evacuations in Italy and prompting hundreds of arrests in France, where this summer's fires have caused more damage than at any point since the Second World War. The crises are unfolding against a backdrop of extreme heat, with temperatures in Italy regularly exceeding 40°C and red-level alerts issued across nearly all major Italian cities.

At Lake Garda — one of Italy's most visited tourist destinations, situated in the country's north — a wildfire broke out in the municipality of Tignale on the lake's western shore, forcing the evacuation of more than 200 people, including tourists staying in a hotel and residents of five holiday homes. Firefighting teams on the ground have been hampered by steep terrain and strong winds that are accelerating the blaze. Helicopters and water-bombing aircraft have been deployed to assist. Authorities expect the intense heat to persist until at least the middle of August.

In France, the scale of destruction has triggered a fierce public debate over both responsibility and government preparedness. More than 300,000 acres have burned across the country this summer. Authorities have made 420 arrests of individuals allegedly responsible for starting fires — either deliberately or through negligence — including 166 minors. Among those charged is a 23-year-old man accused of deliberately igniting ten fires in five days in the south-eastern Var region, who faces up to 15 years in prison and a €150,000 fine if convicted. Other sentences have already been handed down, including a three-year jail term for a man who started fires in the Vosges region in north-eastern France.

However, the wave of prosecutions has drawn criticism. Legal experts and journalists have questioned whether investigators have had sufficient time to establish intent in each case, and some sentences — including those handed to a homeless man and a person with severe autism for discarding cigarette butts — have been condemned as disproportionate. Fire investigation officers note that in the current drought conditions, even a small spark can trigger a rapidly spreading fire, and that establishing the precise origin of a blaze is complex work. Experts broadly agree that while human activity is the leading ignition factor, deliberate arson accounts for only a small fraction of cases.

President Emmanuel Macron has urged national unity and acknowledged the need for structural adaptation, calling for different types of forests to be replanted in line with changing climatic conditions. With another heatwave forecast for France within days, the crisis shows little sign of easing. Across Europe, the fires are a stark illustration of how rising temperatures driven by climate change are amplifying the risk and intensity of natural disasters — a challenge that experts warn will only grow in the years ahead.