protests by the DSZ leadership, recognizing their common origins and similar goals of ridding both Poland and Ukraine of the Soviets, WiN engaged in talks with the Ukrainian Insurgent Army (UPA). By spring 1947 in the Lublin region and Podlasie, the WiN had signed an armistice with the UPA. Occasionally, WiN and UPA cooperated in destroying communist establishments (such as in a joint May 1946 attack on secret police headquarters in Hrubieszów). Similar agreements were reached in May 1945 in Ruda Różaniecka, as well as April 1945 in Siedliska. Final days In April 1947, many WiN members came out of hiding to take advantage of an apparent amnesty issued by the communist authorities. Instead, many were killed. Members of the organization were accused of plotting the overthrow of the People's Republic along with the Polish leaders in the West such as General Władysław Anders and the CIA. The show trials for most of the leadership took place in 1947. The Communist repression apparatus under Jakub Berman and Stanislaw Radkiewicz exterminated most of the leadership, and by 1953, the organization had been destroyed. Nonetheless, individual units continued to fight for Polish independence until 1963. Information published later indicated that one of the reasons for the failure of the WIN mission to Poland by the Gehlen Organization was that inside information had been provided to the Soviet Intelligence services by "moles". The Gehlen Organization was an intelligence agency that was established in June 1946 by US occupation authorities in West Germany and controlled by the CIA.<ref> Presidents September 2, 1945 to November 5, 1945: Colonel Jan Rzepecki November 1945 to October 18, 1946: Colonel Franciszek Niepokólczycki October 1946 to January 5, 1947: Lieutenant-Colonel Wincenty Kwieciński January 1947 to November 1947: Lieutenant-Colonel Łukasz Ciepliński See also Cursed soldiers Emilia Malessa Attack on Hrubieszów Public execution in Dębica (1946) References Polish dissident organisations National liberation movements Political organisations based in Poland Anti-communism in Poland