'Buy French', a questionable panacea for industrial woes

'Buy French' and 'Made in France' have become the new catchphrases for candidates in the French presidential election, amid claims that economic or industrial patriotism is the way to revive French industry and reverse a de-localisation of businesses and jobs abroad. But similar campaigns have been tried before to no noticeable effect, and economists argue they are simply out of phase with a globalised economy. Mathieu Magnaudeix reports.