In 2006, Poland adopted a state programme for building the Fourth Rzeczpospolita. Its goal is to extend Poland’s cultural and political domination over the territories which were part of the first Rzeczpospolita until the late XVIII century. This geopolitical project directly concerns Belarus and Ukraine.
The state programme has both humanitarian and military elements. Under the latter, an increasing militarisation of Poland must be taken into account. The former envisages increasing Polish influence over Belarus by issuing the Pole’s Card to Belarusian citizens and the promotion of Polish historic views among Belarusian intelligentsia, officials and students.
The humanitarian element is a first phase, its objectives are to trick, deceive, derussify and to take away the sense of self-preservation from Belarusian society as well as to disrupt the allied relations between Belarus and Russia. Following this phase, Poland plans to send its troops to take over Minsk as in 1919.
Given this, only a strong Union with Great Russia is a true guarantee of Belarus’ territorial integrity and its sustainable development.
This is a conspiracy theory with no evidence given. It is consistent with recurring pro-Kremlin narratives about Polish plans to re-establish its empire at the expense of its Eastern neighbours, and about the West's plans to disrupt Belarusian-Russian relations and to destabilise Belarus.
Poland respects the territorial integrity of its neighbouring states and does not have a state programme to establishing the Fourth Rzeczpospolita. The IV Rzeczpospolita, or Fourth Republic, was a plan for a moral revolution and political change put forward in the late 1990s by the Polish conservative philosopher Rafał Matyja and used in public discourse to describe the 2005-2007 period, when the Law and Justice party was in the government for the first time. However, this concept has nothing to do with establishing a Polish empire at the expense of Poland's eastern neighbours, including Belarus. Read more about the use of conspiracy here.