Soviet Union

Technilly the world first comunist nation (That it actually followed the communist principle is left to personal interprepation) was one of the bloodiest, represive dictatorship on earth. (Mostly under Joseph Stalin )

Soviet Union in Worldwar
One of the few remaining nation after The Race Invasion it was suffering crushing defeat (but would ulitmlty would have won) agaist Nazi Germany before the invasion. The Race had a particular time conquering it because of the coldness of Russia. Using The Race plutoniumn it was able to built the first human atomic bomb. After his death Molotov took over the Soviet Union.