Santiago Bernabéu's "revolution" that ushered in the era of unprecedented dominance. Bernabéu, himself a veteran of the Civil War who fought for Franco's forces, saw Real Madrid on top not only of Spanish but also European football, helping create the European Cup, the first true competition for Europe's best club sides. His vision was fulfilled when Real Madrid not only started winning consecutive league titles but also swept the first five editions of the European Cup in the 1950s. These events had a profound impact on Spanish football and influenced Franco's attitude. According to historians, during this time he realized the importance of Real Madrid for his regime's international image, and the club became his preferred team until his death. Fernando Maria Castiella, who served as Minister of Foreign Affairs under Franco from 1957 until 1969, noted that "[Real Madrid] is the best embassy we have ever had". Franco died in 1975, and the Spanish transition to democracy soon followed. Under his rule, Real Madrid had won 14 league titles, 6 Copa del Generalísimo titles, 1 Copa Eva Duarte, 6 European Cups, 2 Latin Cups and 1 Intercontinental Cup. In the same period, Barcelona had won 8 league titles, 9 Copa del Generalísimo titles, 3 Copa Eva Duarte titles, 3 Inter-Cities Fairs Cups and 2 Latin Cups. The rivalry was intensified during the 1950s when the clubs disputed the signing of Alfredo Di Stéfano. Di Stéfano had impressed both Barcelona and Real Madrid while playing for Los Millionarios in Bogotá, Colombia, during a players' strike in his native Argentina. Soon after Millonarios' return to Colombia, Barcelona directors visited Buenos Aires and agreed with River Plate, the last FIFA-affiliated team to have held Di Stéfano's rights, for his transfer in 1954 for the equivalent of 150 million Italian lira (according to other sources 200,000 dollars). This started a battle between the two Spanish rivals for his rights. FIFA appointed Armando Muñoz Calero, former president of the Spanish Football Federation as mediator. Calero decided to let Di Stéfano play the 1953–54 and 1955–56 seasons in Madrid, and the 1954–55 and 1956–57 seasons in Barcelona. The agreement was approved by the Football Association and their respective clubs. Although the Catalans agreed, the decision created various discontent among the Blaugrana members and the president was forced to resign in September 1953. Barcelona sold Madrid their half-share, and Di Stéfano moved to Los Blancos, signing