 Complete the following phrase:  In March 1923 Stamboliyski, signed an agreement with Yugoslavia recognising the new border and agreeing to suppress VMRO. This triggered a nationalist reaction, and on June 9 there was a coup that led to the downfall and murder of Stamboliykski. A right-wing government under Aleksandar Tsankov took power, backed by the Tsar, the army and the VMRO, which waged a White Terror against the Agrarians and the Communists. The Communist leader Georgi Dimitrov fled to the Soviet Union. There was savage repression in 1925 following the second of two failed attempts on the Tsars life in the 