Tito angered Stalin by agreeing with the projects of Bulgarian leader Georgi Dimitrov, which meant to merge the two Balkan countries into a Balkan Federative Republic according to the projects of Balkan Communist Federation. This led to the 1947 cooperation agreement signed in Bled (Dimitrov also pressured Romania to join such a federation, expressing his beliefs during a visit to Bucharest in early 1948). The Bled agreement, also referred to as the "Tito-Dimitrov treaty", was signed 1 August 1947 in Bled, Slovenia. It foresaw also unification between Vardar Macedonia and Pirin Macedonia and return of Western Outlands to Bulgaria. The policies resulting from the agreement were reversed after the Tito-Stalin split in June 1948, when Bulgaria was being subordinated to the interests of the Soviet Union and took a stance against Yugoslavia.