Key legal question
Whether Art. 17 of the Hague Convention barred security for costs against the Germany-domiciled respondents
Extracted holding
Yes. Security may not be imposed solely because a claimant is foreign or lacks domicile/residence in Switzerland when the claimant is a national of, and domiciled in, another contracting state.
Extracted reasoning
Art. 17 excludes the foreign domicile/residence criterion as a ground for security; it does not prevent security based on reasons that would also apply to domestic litigants. The lower court correctly applied the Convention and therefore lawfully refused security against the respondents domiciled in Germany.