Original sentence: However, at the same time, it can also be said that it was imperialist as it asserted its dominance over the countries of Eastern Europe, while any state that attempted to secede from the Soviet Union was occupied by the Red Army, and thousands of nationalists were deported to concentration camps
Edited sentence: Any state that dared to breakaway from the Russian Empire was roothlessly occupied by the Red Army, and thousands of nationalists were deported to concentration camps.However, at the same time, it can also be said that it was imperialist as it asserted its dominance over the countries of Eastern Europe.The irony is perhaps doubly rich, as Lenin himself persuaded imperialist policies after the Communist Revolution