Complex sentence: Not only that, France had no intention to ally with Russia, who meddled with their affairs in Austria's succession war, years earlier, and saw the complete dismemberment of Prussia as unacceptable to the stability of Central Europe.
Split into simpler sentences: Not only that, France had no intention to ally with Russia, who, years earlier, had meddled in France's affairs during Austria's succession war. France also saw the dismemberment of Prussia as threatening to the stability of Central Europe.