Translate the following English sentence to French:
"We are astonished by the political naivety of people who, with thoughtless words, have bolstered Mr Haider' s position in Austria and made the Union look ridiculous, riding roughshod over Article 7 of the Treaty by announcing unconstitutional measures."
Nous sommes stupéfaits face à l'inconscience politique de ceux qui, par leurs paroles imprudentes, ont renforcé la position de Haider en Autriche et ridiculisé l' Union, foulant aux pieds l'article 7 du Traité en annonçant des mesures anticonstitutionnelles.