Sébastien Lecornu may have lived to see another day, but this crise de régime could yet prove terminal for the Fifth Republic

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In October 2022, when Rishi Sunak moved into 10 Downing St, he became the fifth British prime minister to take up the office in six years.

Unleashed on the UK by Brexit, this was unprecedented political turmoil. So how might we describe what is happening in France, now on its fifth (or sixth, depending how you count) premier in two years – three of them in the past 10 months?