The European arrest warrant, a legal and diplomatic puzzler If Belgian judicial authorities refuse to carry out the European arrest warrant issued by Spain for ousted Catalan leader Carles Puigdemont, it would create "diplomatic tensions, judicial tensions, and political tensions between the two countries," says Anne Weyembergh, president of the Institute for European Studies at the Université Libre de Bruxelles, who called the situation "a veritable test case." IMAGES AND SOUNDBITES