The Sino-Soviet split burst into the open in June 1960 at a Romanian Workers' Party congress, at which Khrushchev attempted to secure condemnation of Beijing. Albania's delegation, alone among the European delegations, supported the Chinese. The Soviet Union immediately retaliated by organizing a campaign to oust Hoxha and Shehu in the summer of 1960. Moscow cut promised grain deliveries to Albania during a drought, and the Soviet embassy in Tiranë overtly encouraged a pro-Soviet faction in the Albanian Party of Labor ( APL) to speak out against the party's pro-Chinese stand. Moscow also apparently involved itself in a plot within the APL to unseat Hoxha and Shehu by force. But given their tight control of the party machinery, army, and Shehu's secret police, the Directorate of State Security (Drejtorija e Siguimit te Shtetit--Sigurimi), the two Albanian leaders easily parried the threat. Five pro-Soviet Albanian leaders were eventually tried and executed. China immediately began making up for the cancellation of Soviet wheat shipments despite a paucity of foreign currency and its own economic hardships.