The Percentages agreement provided for equal shares to the Soviet Union and the United Kingdom with respect to Yugoslavia. Now, keeping to its promise regarding Greece in the same agreement (which gave 90% to England), Stalin, unlike Tito, did not assist the Communists in the Greek Civil War. Disagreements over the Balkan federation (the unification with Bulgaria and Albania) also contributed to the split. In other words, the Soviet Union perceived Tito as acting too independently and with the aim of expanding his influence in the region. In 1948, the Cominform denounced the Communist Party of Yugoslavia for a variety of errors (from Bukharinism and undermining the revolution in the countryside to lack of internationalism in conduct to the Soviets which was supposedly the reason for the withdrawal of Soviet military experts). In 1949, the conflict sharpened irretrievably and would remain so until Stalin's death and the restoration of diplomatic relations.