Catalan leaders Carles Puigdemont and Antoni Comin attend a plenary in the hemicycle of the European Parliament in Strasbourg

Video. Catalan separatist leaders take up MEP seats in blow to Madrid

Catalan separatist leaders Carles Puigdemont and Antoni Comin vowed to push their secessionist cause onto Europe’s agenda as they took up their seats in Strasbourg, despite facing an arrest warrant in Spain.