On Friday, July 24, firefighters battling the unprecedented forest fires in southwestern France glimpsed an equally unprecedented phenomenon: a pyrocumulonimbus, better known as a fire cloud. Already common in the western United States and Canada, fire clouds are a storm within a storm, wrought by extraordinary amounts of heat and energy that belch great plumes of fire that spawn fiery tornadoes that carbonize everything and everyone in their paths.

Yet a different kind of pyrocumulonimbus, no less unprecedented, has been wreaking havoc on the country’s political landscape. It is a phenomenon where the intensifying friction between the ideological extremes at both ends will create an inferno that will consume the parties sandwiched in between—and perhaps even volatize the foundations of the Fifth Republic.

The Fifth Republic, the political home that Charles de Gaulle built for France in 1958, had always been defined as a two-bloc system. The meteoric rise to the presidency of Emmanuel Macron, running as an independent who founded his own party, Republic on the Move, fatefully splintered that tradition—and the snap legislative elections that he called for in 2024 shattered it entirely.