A survey by the European Council on Foreign Relations in seven EU countries in January of 2022 shows that citizens of these countries did see the EU in a position of responsibility given the then hypothetical invasion of Ukraine by Russia.
Responses indicating the EU should defend Ukraine were almost as numerous as responses mentioning NATO as a defender of Ukraine.
While a NATO involvement (or a NATO membership of Ukraine) is very unlikely given the major implication of nuclear power and NATO member the United States entering into the war with Russia, the ways the EU can assist in the defense of Ukraine are actually more varied even if they stop short of immediate membership of Ukraine – or other countries potentially at risk for that matter.
The EU member states have already coordinated with each other to send military equipment to Ukraine, while also showing a uniform front on sanctions, refugee admissions and other aspects of the conflict.
An oil embargo could be the next coordinated step taken by the EU. The EU is unlikely to issue any military mandates on Ukraine, but in the current situation – where neither NATO nor any individual non-NATO, non-nuclear power is able to enter the war against nuclear power Russia – this doesn’t necessarily disadvantage the EU as a party trying to influence this war.
NATO, like the EU, has been coordinating among members to send weapons to Ukraine, for example from France, while also supplying intelligence, but as its primary objective is the defense of its member states, it is actually able to do less in the current scenario.
The involvement through intranational bodies that they are members of was more popular among EU respondents of the ECFR survey.
Defence of Ukraine as a task of one’s own country was much less highly rated, especially in Finland and Germany.
NATO involvement in the defense of Ukraine was the highest almost across the board, closely followed by defense through the EU.