 Complete the following phrase:  Tensions between the increasingly nationalistic Polish government and various increasingly separatist ethnic minorities continued to grow, and the Belarusian minority was no exception. Likewise, according to Marek Jan Chodakiewicz, the USSR considered Poland to be enemy number one. During the Great Purge, the Polish National District at Dzyarzhynsk was disbanded and the Soviet NKVD undertook the so-called 