Translate the following English sentence to French:
"We cannot fail to recognise the effort that has been made a posteriori to try to unify viewpoints, but the European People' s Party believes that in some fundamental areas there are still some clear contradictions."
Mais je ne peux pas omettre de reconnaître l' effort qu' ils ont accompli a posteriori pour tenter de réunir les critères, mais le parti populaire européen estime que des contradictions évidentes persistent encore sur quelques thèmes de fond.