Translate the following English sentence to French:
"We regret that unequivocal repudiations and constructive proposals do not, however, go hand in hand, as proved by the declaration that has already been discussed and which has been presented by several groups to the exclusion of others and without open debate."
Cependant, nous regrettons que refus catégoriques et propositions constructives ne soient pas allés de pair, certains groupes en ayant écarté d'autres et ayant refusé d'ouvrir le débat de la déclaration qui a déjà fait l'objet de commentaires.