 Complete the following phrase:  In May 1991, pro-Soviet politicians associated with Yedinstvo unilaterally proclaimed the illegal establishment of the so-called Polish National-Territorial Region, projected in ethnically-mixed Vilnius Region district just outside of Vilnius, complete with its own flag, anthem, bank and the capital at Naujoji Vilnia. In August of the same year Lithuanian authorities cracked down on these actions as separatists in the area had supported the failed 