Wells surely knows well how to construct the milieus and journeys shuttling between countries (will be walled soon) through his brilliant understanding of camera movement, how to conduct the emotions wrapped within personal and justificative conflicts. It is also a peculiar sociopolitical setup contradicting to a certain American-central-ism.
Beautifully shot in black and white. Haunting throughout scene by scene. Marvelous dialogue between the graceful Deborah Kerr and kids. Nearly perfect.