On March 4, the head of the Investigation Team No. 1 of the National Prosecutor's Office in Poland announced a decision to partially discontinue the probe associated with the Smolensk disaster. This investigation, which has been ongoing since August 2016, includes several threads, one of which concerns actions taken on April 10, 2010, that could be classified as 'diplomatic betrayal.' This specific accusation involves a decision made by senior Polish officials to abandon an oral agreement with Russian President Dmitry Medvedev regarding a joint investigation into the crash of the Tu-154M aircraft.

The announcement was made public on March 17, and it highlights two key areas of focus within the broader investigation. The first relates to the actions taken in Warsaw on the date of the disaster itself, where discussions led by the Polish Prime Minister, or acting President at the time, allegedly reneged on an agreement that aimed to ensure cooperation between Polish and Russian prosecutors. The second aspect pertains to various actions taken from April 10 to April 26, 2010, which have not yet been fully disclosed but are critical to the ongoing investigation.

This partial discontinuation raises significant questions about accountability and transparency among Polish officials during this pivotal moment in history. The Smolensk disaster, which resulted in the deaths of President Lech Kaczyński and numerous other high-ranking officials, continues to be a contentious subject in Poland's political landscape, with implications for the government's handling of foreign relations and its internal narrative around the tragedy.