Sundance Selects is acquiring all US rights to Valérie Donzelli’s Cannes Critics’ Week entry Declaration of War.

Produced by Edouard Weil, the film was written by Donzelli and Jérémie Elkaïm, who also star, and sold by Wild Bunch. The drama, which was the opening night film in this year’s Critics’ Week, tells the story of a battling couple and their sick child.

Jonathan Sehring, president of Sundance Selects, a sister division to IFC Films, said: “Our entire company fell in love with Declaration of War. Valérie Donzelli, along with her collaborator Jérémie Elkaïm, won us over with their completely heartfelt, life affirming film that announces them as major new talents. We are confident that this is a film that will inspire ardent love once we begin to screen it for American audiences.”

The deal was negotiated by Sundance Selects’ SVP of acquisitions and productions Arianna Bocco and SVP of business and legal affairs Betsy Rodgers and Wild Bunch’s Carole Baraton.