In the 1970s the Soviet Union itself was russified, in a certain special way. The ideological conclusion was drawn that classes exist within the Soviet Union itself and not within individual nations. Thus the USSR needed only one thinking class, and not multiple national ones. As a result the Ukrainian language was driven from schools, and especially from higher education. It remained as a language of low culture and, paradoxically, of very high culture, as even at this point no one in the USSR denied the existence of a distinct Ukrainian tradition in the arts and humanities. In this atmosphere Ukrainian patriots, and even Ukrainian nationalists, embraced a civic understanding of Ukrainian identity. They were aided in this by Polish émigré intellectuals, who in the 1970s and 1980s were defining a future foreign policy for a period after communism.
These thinkers, grouped around Jerzy Giedroyc and the journal Kultura in Paris, argued that Ukraine was a nation in the same sense as Poland, and that a future independent Poland should recognize a future independent Ukraine -- without challenging its borders. This was controversial at the time, because Poland lost the lands now know as western Ukraine as a result of the war. In retrospect it was a first step, for both Ukraine and Poland, towards the legal and intuitional norms of postwar Europe. The preemptive recognition of Ukraine within its existing borders became the basis for a Polish foreign policy of „European standards“ in 1989. In the crucial period between 1989 and 1991, and for the first time in history, Ukrainian national activists only had one opponent: the Soviet Union. In December 1991, more than 90% of the inhabitants of Soviet Ukraine voted for independence (including a majority in all regions of Ukraine).
Russia and Ukraine then went their separate ways. Privatization and lawlessness led to oligarchy in both countries. In Russia the oligarchs were subdued by a centralized state, whereas in Ukraine they generated their own sort of pluralism. Until very recently all presidents in Ukraine oscillated between east and west in the foreign policy and among oligarchical clans in their domestic loyalties. What was unusual about Viktor Yanukovych is that he tried to end all pluralism, not only the popular sort but the oligarchical sort as well. In domestic policy he generated a fake democracy, in which his favored opponent was the far right party Svoboda. In so doing he created a situation in which he could win elections and in which he could tell foreign observers that he was at least better than the nationalist alternative. In foreign policy he found himself pushed towards the Russia of Vladimir Putin, not so much because he desired this as such, but because the way in which he ruled made substantial cooperation with the European Union difficult. Yanukovych seems to have stolen so much from state coffers that the state itself was on the point of bankruptcy in 2013, which also made him vulnerable to Russia.