Translate the following English sentence to French:
"It gives the impression that they are three minor or insignificant subjects whereas in fact they are three extremely serious and important subjects, and difficult, so difficult that we did not have sufficient political courage collectively at Amsterdam to deal with them in depth."
Il s' agit de trois sujets extrêmement graves et importants, difficiles, tellement difficiles que le courage politique collectif a manqué à Amsterdam pour les traiter au fond.