There are some similarities between the Sahra Wagenknecht (BSW) Alliance and La France insoumise – and some acquaintances. Oskar Lafontaine, the former co-founder of the Left and later Wagenknecht’s husband, had a close relationship with Jean-Luc Mélenchon. Both were considered black sheep in their parties – Lafontaine in the SPD, Mélenchon in the Parti socialiste.