Translate the following English sentence to French:
"I believe that the mission constituted the most credible observer voice during these critical times in Zimbabwe. This was reflected in extensive press coverage during the whole period, both locally and internationally."
Je pense que la mission a été considérée comme la mission d'observation le plus crédible de cette période de troubles au Zimbabwe, ainsi que l'a montré l'importante couverture de la presse locale et internationale.