NATO's Eastward Expansion Is Vladimir Putin Right?

 https://www.spiegel.de/international/world/nato-s-eastward-expansion-is-vladimir-putin-right-a-bf318d2c-7aeb-4b59-8d5f-1d8c94e1964d

NATO's Eastward Expansion Is Vladimir Putin Right?

Vladimir Putin insists that the West cheated Russia by expanding NATO eastward following the end of the Cold War. Is there anything to his claims? The short answer: It's complicated.