1 February 1945. The Provisional Government of the Republic of Poland, recognised by the USSR, Czechoslovakia and Yugoslavia, moved from Lublin to Warsaw. From 4 to 11 February 1945, a conference of the so-called Big Three, i.e. the leaders of the USA, Great Britain and the USSR, i.e. Franklin Delano Roosevelt, Winston Winston, and the USSR, was held in Yalta in the Crimea. The conference of the so-called Big Three, i.e. the leaders of the USA, Great Britain and the USSR - Franklin Delano Roosevelt, Winston Churchill and Joseph Stalin - was held in Yalta in the Crimea on 4-11 February 1945, following which the Western states recognised the Soviet annexation of the eastern territories of the Polish-Lithuanian Commonwealth, granting Poland in return an unspecified part of pre-war German territory, and above all confirmed the formation of the so-called "Provisional Government of National Unity", which was to be formed through the reorganisation of the Provisional Government with the participation of all democratic forces. The conference's resolutions were completely silent on the existence of an émigré government. In view of the international situation created, on 21 February the Council of National Unity, i.e. the Parliament of Underground Poland, decided to recognise the Yalta arrangements. The last hope for the Polish independence groups was for them to enter the "national unity" government declared at Yalta, lest it be dominated by communists subordinated to J. Stalin. The Polish leadership therefore accepted the Soviet invitation to talks - against all previous experience. As a result, contact was established with the Soviet authorities and their representative, NKVD General Ivan Serov. On 4.03.1945, a preliminary meeting of the AK delegation with Colonel Pimienow, the plenipotentiary of General I. Serov, took place in Pruszków. On 27.03.1945 the following arrived in Pruszków: the Government Delegate and Deputy Prime Minister for Poland Jan Stanisław Jankowski, the last AK Commander-in-Chief, acting at that time as the Commander-in-Chief of the "NIE" organisation, General Leopold Okulicki, the Chairman of the Council for National Unity Kazimierz Pużak (the representative of the PPS "Freedom, Equality, Independence") and Józef Stemler-Dąbski, acting as an interpreter, at the same time Deputy Minister of the Information Department of the Polish Delegation for Poland. The next day, the other participants in the planned talks arrived: Antoni Pajdak (PPS-WRN), Stanisław Jasiukowicz, Kazimierz Kobylański, Zbigniew Stypułkowski and Aleksander Zwierzyński from the National Party, Józef Chaciński and Franciszek Urbański from the Labour Party, Adam Bień, Kazimierz Bagiński and Stanisław Mierzwa from the People's Party, and Eugeniusz Czarnowski and Stanisław Michałowski from the Democratic Union. They were all deceitfully arrested by the NKVD and taken to Okęcie the following day, from where they were flown by special plane to Moscow. Those arrested initially spent almost three months in the NKVD's Lubianka prison, where they were intensively interrogated. They revealed the fact of the existence of the organisation "NIE", its origins and tasks. The show trial - the so-called trial of the sixteen - began on 18 June. It was held according to Soviet models, which bore no relation to a real trial in a democratic state. At the same time, it was a blatant violation of international agreements that do not recognise the trial of state authorities of one state by the judicial bodies of another state under its laws. It was based only on the provisions of the agreement of 26.07.1944 between the PKWN and the Government of the USSR on the frontal strip and protection of the rear of the front and the resolution of 22.02.1945 on the frontal strip accepted by the Provisional Government. The court was presided over by General Vasily Ulrych, who served as Chairman of the Military College of the Supreme Court of the USSR. In 1936-1938, in the same hall, he presided over the courts that sentenced thousands of old Bolsheviks exterminated en masse in Stalin's Great Purge. Also on the jury were Major General Nikolai Afanasiev, the USSR's general military prosecutor, and Roman Rudenko, who later represented the USSR at the Nuremberg Trials. In the end, after a trial lasting only three days, on 21.06.1945, the majority of defendants were sentenced to prison terms of several years, while some were acquitted. Of those convicted who served their prison sentences in Moscow, two of them died in 1946. - Stanislaw Jasiukowicz on 22 October, and General Okulicki on Christmas Eve. It is likely that both were murdered. Their cremated ashes were deposited in the Donskoye Cemetery in Quaternary 3, where NKVD victims of different nationalities were buried in common graves. This quarters is located near the cemetery's Orthodox church, converted into a crematorium. The burial place of the leaders of the Polish state was determined by the Polish Consul in Moscow, Michal Zhuravsky. This made it possible to commemorate these victims. On 29.06.1994, two commemorative plaques were unveiled - in honour of General Leopold Okulicki and Stanisław Jasiukowicz. The commemoration was initiated by the Council for the Protection of Struggle and Martyrdom Sites, and the plaques were funded by Budimex of Warsaw. The inscriptions on the plaques read: "The late Brig. Gen. Leopold Okulicki "Niedźwiadek" / born 12. XI 1898 / Commander of the Home Army / Knight of the Golden Cross of Virtuti Militari / innocently tried by the Military College of the Supreme Court of the USSR / on 18-21 VI 1945 / Died in prison in Butyrki / 24 XII 1946 / Honour his Memory!" and "The late Gen.Stanisław Jasiukowicz "Opolski" / born on 8 December 1882 / Deputy Delegate of the Government of the Republic of Poland for the Country / Minister - Member of the State Council of Ministers / Innocently judged by the Military College of the Supreme Court of the USSR / from 18 to 21 June 1945 / Died in prison in Butyrki prison / 22 October 1946 / Honour his Memory!". On 26.01.1996, a monument was unveiled at the cemetery in honour of all the victims of Stalinism buried here (including Istvan Bethlen, Prime Minister of Hungary from 1922 to 1932). Its author is Frid Sogojan.