Union of the Socialist Left
The Union of the Socialist Left was a French movement of left-wing activists, founded on 7–8 December 1957 by dissidents from the French Section of the Workers' International ; former members of the French Resistance, until then close to the Communist Party; social Christian trade-unionists. It was the first alliance between social Christians and Marxists. The UGS merged with the Autonomous Socialist Party in 1960 to form the Unified Socialist Party.