Actor and singer Gilad Kahana poses for photographers during a photo call for the film A Tale of Love and Darkness, at the 68th international film festival, Cannes, southern France, Sunday, May 17, 2015. (AP Photo/Lionel Cironneau)

Director and actor Natalie Portman poses for photographers during a photo call for the film A Tale of Love and Darkness, at the 68th international film festival, Cannes, southern France, Sunday, May 17, 2015. (AP Photo/Lionel Cironneau)

Director and actor Natalie Portman, left, actor Amir Tessler and actor Amir Tessler pose for photographers during a photo call for the film A Tale of Love and Darkness, at the 68th international film festival, Cannes, southern France, Sunday, May 17, 2015. (AP Photo/Lionel Cironneau)

Natalie Portman poses for photographers during a photo call for the film A Tale of Love and Darkness, at the 68th international film festival, Cannes, southern France, Sunday, May 17, 2015. (AP Photo/Lionel Cironneau)

Director and actor Natalie Portman poses for photographers during a photo call for the film A Tale of Love and Darkness, at the 68th international film festival, Cannes, southern France, Sunday, May 17, 2015. (AP Photo/Lionel Cironneau)

Director and actor Natalie Portman, left, and actor Amir Tessler pose for photographers during a photo call for the film A Tale of Love and Darkness, at the 68th international film festival, Cannes, southern France, Sunday, May 17, 2015. (AP Photo/Lionel Cironneau)

From left, director and actor Natalie Portman, actor Amir Tessler and actor Amir Tessler pose for photographers during a photo call for the film A Tale of Love and Darkness, at the 68th international film festival, Cannes, southern France, Sunday, May 17, 2015. (AP Photo/Lionel Cironneau)

Director and actor Natalie Portman, right, and actor and singer Gilad Kahana pose for photographers during a photo call for the film A Tale of Love and Darkness, at the 68th international film festival, Cannes, southern France, Sunday, May 17, 2015. (AP Photo/Lionel Cironneau)

Actor Gilad Kahana, Natalie Portman and Amir Tessler pose for photographers during a photo call for the film A Tale of Love and Darkness, at the 68th international film festival, Cannes, southern France, Sunday, May 17, 2015. (AP Photo/Lionel Cironneau)

US-Israeli actress and director Natalie Portman poses during a photocall for the film "A Tale of Love and Darkness" at the 68th Cannes Film Festival in Cannes, southeastern France, on May 17, 2015. AFP PHOTO / VALERY HACHE

US-Israeli actress and director Natalie Portman poses during a photocall for the film "A Tale of Love and Darkness" at the 68th Cannes Film Festival in Cannes, southeastern France, on May 17, 2015. AFP PHOTO / VALERY HACHE

US-Israeli actress and director Natalie Portman poses during a photocall for the film "A Tale of Love and Darkness" at the 68th Cannes Film Festival in Cannes, southeastern France, on May 17, 2015. AFP PHOTO / VALERY HACHE

US-Israeli actress and director Natalie Portman poses during a photocall for the film "A Tale of Love and Darkness" at the 68th Cannes Film Festival in Cannes, southeastern France, on May 17, 2015. AFP PHOTO / ANNE-CHRISTINE POUJOULAT

US-Israeli actress and director Natalie Portman poses during a photocall for the film "A Tale of Love and Darkness" at the 68th Cannes Film Festival in Cannes, southeastern France, on May 17, 2015. AFP PHOTO / VALERY HACHE

US-Israeli actress and director Natalie Portman poses during a photocall for the film "A Tale of Love and Darkness" at the 68th Cannes Film Festival in Cannes, southeastern France, on May 17, 2015. AFP PHOTO / ANNE-CHRISTINE POUJOULAT

US-Israeli actress and director Natalie Portman (R) poses with Israeli actors Gilad Kahana (L) and Amir Tessler during a photocall for the film "A Tale of Love and Darkness" at the 68th Cannes Film Festival in Cannes, southeastern France, on May 17, 2015. AFP PHOTO / ANNE-CHRISTINE POUJOULAT

US-Israeli actress and director Natalie Portman poses during a photocall for the film "A Tale of Love and Darkness" at the 68th Cannes Film Festival in Cannes, southeastern France, on May 17, 2015. AFP PHOTO / ANNE-CHRISTINE POUJOULAT

Israeli actor Gilad Kahana poses during a photocall for the film "A Tale of Love and Darkness" at the 68th Cannes Film Festival in Cannes, southeastern France, on May 17, 2015. AFP PHOTO / VALERY HACHE

US-Israeli actress and director Natalie Portman waves during a photocall for the film "A Tale of Love and Darkness" at the 68th Cannes Film Festival in Cannes, southeastern France, on May 17, 2015. AFP PHOTO / ANNE-CHRISTINE POUJOULAT

US-Israeli actress and director Natalie Portman poses during a photocall for the film "A Tale of Love and Darkness" at the 68th Cannes Film Festival in Cannes, southeastern France, on May 17, 2015. AFP PHOTO / ANNE-CHRISTINE POUJOULAT

US-Israeli actress and director Natalie Portman poses during a photocall for the film "A Tale of Love and Darkness" at the 68th Cannes Film Festival in Cannes, southeastern France, on May 17, 2015. AFP PHOTO / ANNE-CHRISTINE POUJOULAT

TOPSHOTS US-Israeli actress and director Natalie Portman poses during a photocall for the film "A Tale of Love and Darkness" at the 68th Cannes Film Festival in Cannes, southeastern France, on May 17, 2015. AFP PHOTO / ANNE-CHRISTINE POUJOULAT

Director and actor Natalie Portman and actor Amir Tessler pose for photographers at the photo call for the film A Tale of Love and Darkness, at the 68th international film festival, Cannes, southern France, Sunday, May 17, 2015. (Photo by Joel Ryan/Invision/AP)

Actor and singer Gilad Kahana poses for photographers at the photo call for the film A Tale of Love and Darkness, at the 68th international film festival, Cannes, southern France, Sunday, May 17, 2015. (Photo by Joel Ryan/Invision/AP)

Actor and singer Gilad Kahana, actor Amir Tessler and director and actor Natalie Portman pose for photographers at the photo call for the film A Tale of Love and Darkness, at the 68th international film festival, Cannes, southern France, Sunday, May 17, 2015. (Photo by Joel Ryan/Invision/AP)

Actor and singer Gilad Kahana, actor Amir Tessler and director and actor Natalie Portman pose for photographers at the photo call for the film A Tale of Love and Darkness, at the 68th international film festival, Cannes, southern France, Sunday, May 17, 2015. (Photo by Joel Ryan/Invision/AP)

Director and actor Natalie Portman poses for photographers at the photo call for the film A Tale of Love and Darkness, at the 68th international film festival, Cannes, southern France, Sunday, May 17, 2015. (Photo by Joel Ryan/Invision/AP)

From top left, actor and singer Gilad Kahana, director and actor Natalie Portman and actor Amir Tessler, front, pose for photographers at the photo call for the film A Tale of Love and Darkness, at the 68th international film festival, Cannes, southern France, Sunday, May 17, 2015. (Photo by Joel Ryan/Invision/AP)

Natalie Portman posing at the photocall for the film A Tale of Love and Darkness of the 68th Cannes Film Festival in Cannes, France on May 17, 2015. Photo by Nicolas Briquet/ABACAPRESS.COM

Natalie Portman at a photocall for the film 'A Tale of Love and Darkness (Une histoire d'amour et de tenebres)' presented in competition as part of the 68th Cannes International Film Festival, at the Palais des Festivals in Cannes, southern France on May 17, 2015. Photo by Nicolas Genin/ABACAPRESS.COM

Natalie Portman at a photocall for the film 'A Tale of Love and Darkness (Une histoire d'amour et de tenebres)' presented in competition as part of the 68th Cannes International Film Festival, at the Palais des Festivals in Cannes, southern France on May 17, 2015. Photo by Nicolas Genin/ABACAPRESS.COM

Natalie Portman at a photocall for the film 'A Tale of Love and Darkness (Une histoire d'amour et de tenebres)' presented in competition as part of the 68th Cannes International Film Festival, at the Palais des Festivals in Cannes, southern France on May 17, 2015. Photo by Nicolas Genin/ABACAPRESS.COM