El clâasico : Barcelona v Real Madrid, football's greatest rivalry

Real Madrid versus Barcelona is regarded by many as the most captivating fixture in world football.

But it is not only the on-pitch battles that have forged their rivalry.

From General Franco and bloody civil war to the Catalan city of Barcelona's lukewarm reaction to Spain's recent World Cup and European Championship triumphs, bitterness is never far from the surface. In El Clasico, Richard Fitzpatrick charts the key political and historical flashpoints between the two clubs.

With exclusive interviews with key figures, including Luis Figo, Hristo Stoichkov, Joan Laporta and Vicente del Bosque, El Clasico is the definitive guide to football's greatest feud.