Key legal question
Whether the refusal of public liability for the child abduction was arbitrary because the passport registration and omission to seize the mother's passport created adequate causation.
Extracted holding
The cantonal court could deny adequate causation without arbitrariness; the mother's abduction was the dominant cause and severed any causal link.
Extracted reasoning
The registration may have facilitated departure, but it was not objectively probable that it would lead to kidnapping and mistreatment. The mother's own conduct was extraordinarily serious and relegated any administrative omission to the background; the father's failure to seek timely civil-court measures also mattered.