Variety's review of "Jupiter" assesses Alexandre Smia's political procedural, in which French President Paul Archambault (Denis Menochet) must navigate a fast-escalating nuclear crisis. The reviewer praises Menochet's commanding lead performance but argues the film's tightly confined setting and talky, TV-pilot structure make it feel too small for cinema, despite tackling weighty themes of escalation, alliance obligations and nuclear brinkmanship.

In the plot, Archambault is drawn into supporting Ukraine after its president, Kovalenko, faces aggression from Russian leader Chernov, who survives a likely false-flag assassination attempt and uses it to intensify the conflict. When NATO allies decline to intervene militarily and Chernov detonates a bomb over the Black Sea, Archambault and his advisers retreat to the "Jupiter" war room as tensions near breaking point. The review notes comparisons to Kathryn Bigelow's "A House of Dynamite", commends the tense score and editing, but criticises thin characterisation, an underdeveloped personal backstory for Archambault, and a strong supporting cast (including Reda Kateb, Ella Rumpf and Céline Sallette) reduced to mouthpieces rather than fully realised people.