Ukraine is not now, and has never been, a member of NATO. However, the question of whether it ever will be is a major part of the now four-and-a-half-year-old war between Russia and Ukraine.
Russian President Vladimir Putin has long argued that the threat of NATO expansion, which would bring the defensive alliance to Russia’s doorstep and threaten to “encircle” it, was part of his justification for invading Ukraine.
T-14 Armata Tank. Image Credit: Creative Commons.