This is the 953rd most frequent French word.
rentrée
The term "rentrée" in French refers to the "return" or "start" of activities after a break, especially the beginning of the school year or work after summer.
In this sentence, 'rentrée' refers to 'rentrée scolaire', which is commonly used in French to denote the beginning of the school year.
La rentrée scolaire est prévue pour le 1er septembre.
The school start is scheduled for September 1st.
Here, 'rentrée' is used more generally to signify a return, such as after a holiday or extended break.
Il a beaucoup de travail après la rentrée.
He has a lot of work after the return.
In this context, 'rentrée' refers to the resumption of public or work activities, here specifically in the political arena, that occur after a summer break or holiday.