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Fresh memories of Francisco Franco’s association with fascism amplified the crisis over a royal conversion to Catholicism and a marriage without approval of the Dutch States-General. For the second in line to the throne to not only convert to Roman Catholicism, but to also associate with an alleged Franco sympathizer, caused shock and consternation in the Netherlands. When Princess Irene left the Netherlands to join Prince Carlos in Paris after the announcement of their engagement, a threat was telephoned to KLM Royal Dutch Airways by an anonymous caller saying, “you should investigate the plane”.
