https://www.jurist.org/news/2010/02/poland-government-joins-suit-against/
Poland government joins suit against Russia for 1940 Katyn massacre - JURIST - News
[JURIST] The Polish government joined [Rzeczpospolita report, in Polish] a class-action on lawsuit Wednesday brought against Russia for the 1940 Katyn Massacre...
1940 katyn massacrepoland governmentagainst russia
https://fas.org/publication/katyn_declassified/
Records of 1940 Katyn Massacre Declassified - Federation of American Scientists
Jun 26, 2024 - The National Archives announced that it has declassified over a thousand pages of records pertaining to the 1940 massacre of thousands of Polish Army officers...
1940 katyn massacrerecordsdeclassifiedfederationamerican