Translate the following English sentence to French:
"The military regime out there has made so-called concessions before, which later proved to be absolutely worthless, and this often happened just before an EU-ASEAN Summit, or just before the conference in Geneva."
À maintes reprises, le régime militaire a consenti des concessions qui se révélaient sans valeur ultérieurement et cela se produisait souvent juste avant un sommet UE-ASEAN ou avant la conférence de Genève.