Alfonso VI was first and foremost a tactful monarch who chose to understand the kings of taifa and employed unprecedented diplomatic measures to attain political feats before considering the use of force. He adopted the title "Imperator totius Hispaniae" ("Emperor of all Hispania", referring to all the Christian kingdoms of the Iberian Peninsula, and not just the modern country of Spain). Alfonso's more aggressive policy towards the taifas worried the rulers of those kingdoms, who called on the African Almoravids for help.