Accurate. Country of Origin is basis in this case which is Greece. Adequate response would be to indefinitely bar all Belarusian originating flights from travel

Accurate. Country of Origin is basis in this case which is Greece. Adequate response would be to indefinitely bar all Belarusian originating flights from traveling through any signatory's airspace. However, this most likely only furthers the goals of the current Belarusian administration for the population there. Enforced strictly, to include diplomatic flights, it may cause measurable change.