At Quimper, following the congress, representatives of Brittany, Alsace-Lorraine and Corsica signed the founding charter of Central Committee of the National Minorities of France.
Having more political experience than the other leaders, he guided the PAB to a broadly leftist and federalist position with the intention to forge an alliance with the French Communist Party, which, under the leadership of Marcel Cachin, supported the struggles of national minorities in France up until 1932.
In August 1928, at the second party congress, in Châteaulin, a statement was drafted which proclaimed that Brittany has all "the characteristics of a nationality to meet the modern definitions", and that the Breton people should have "the right to self-determination".
François Debeauvais proposed the creation of a weekly newspaper entitled Le Peuple Breton to improve the party's public profile, but it could not be published for lack of funding.
Breiz Atao was briefly replaced by the journal War Zao, run by the nationalist faction in Trégor, Goëlo and Haute-Cornouaille, which called for a return to nationalism without excluding separatism.