These days Ukraine and Poland remembers the 70th anniversary of Operation Vistula (Wisla in Polish) - the forced deportation of the Ukrainian minority in Poland, which on 28 April 2017 and lasted three months. The expulsion of some 150,000 Ukrainians from the south-eastern provinces of post-war Poland to its northwestern regions was viewed by the as the final solution to the "Ukrainian problem." Carried out by the Soviet-installed Polish communist authorities, the deportation with the aim of national assimilation was comparable to the similar actions of the Soviet authorities regarding the people of Crimea, Caucasus, and Baltic states, where similar deportations were carried out by the Soviet authorities during or immediately after the Second World War, according to Volodymyr Viatrovych, Head of the Institute of National Memory.

28 April 1947 was the beginning of the operation of the Polish communist regime, during which almost 150 thousand Ukrainians were cast from their homes. People were taken hundreds of kilometers away and those who tried to resist were killed. With "Operation Vistula," Poland "cleansed" their ethnic territories from Ukrainians and ended the Ukrainian liberation movement in this region (as there were no more people supporting it left), thereby solving the "Ukrainian problem in Poland." This operation was the final chord of the Second Polish-Ukrainian war that unfolded as part of World War II, beginning in 1942 in Chelm land (now Polish territory). The war was conducted for the Ukrainian territories which were part of Poland before 1939, on which Ukrainians wanted to create their own state, and the Poles wanted to restore the prewar borders. However, the border issue was resolved after World War II without the participation of Ukrainians and Poles, after which the communist authorities of the USSR and Poland forcibly changed the ethnic configuration of the western Ukrainian and eastern Polish territories. The most brutal phase of the operation was "Operation Vistula" in 1947.
On the eve of the anniversary of the tragedy, Ukrainian researchers and civic activists addressed the Ukrainian and Polish parliaments requesting to condemn Operation Vistula as yet another crime of the communist totalitarian regime.
The Electronic Archive avr.org.ua was opened in March 2013 It is a joint project of the Liberation Movement Research Centre, the Ivan Franko Lviv University and the National Museum Prison on Lonskoho. 23,839 copies of documents are currently available at the E-archive. The mission of the project is to make the past accessible.