[1] Gorbachev: “The topic of ‘NATO expansion’ was not discussed at all” https://web.archive.org/web/20150331084405/http://rbth.com/i...
[2] “The U.S.S.R. was never offered a formal guarantee on the limits of NATO expansion post-1990” https://www.rferl.org/a/nato-expansion-russia-mislead/312636...
I've yet to hear why Russia has a better complain to its national security, than say, Ukraine.
After all the same argument could be made backwards for the US. Why shouldn't, e.g., Cuba not be free to host Russian missiles? They're a free country. Surely if the US tried anything to prevent that, their security concerns don't trump those of Cuba.
What would we do if Russia had setup that coup in Canada? We’d have boots on the ground in weeks.
I'm curious what you mean by your use of the word "right" in the above context.
Whose job is it to enforce that right? Is that right enforced for all countries? Or only if mightier countries take an interest?
It seems that more powerful countries are constantly interfering with the internal politics of smaller countries by doing things like supporting dictators, interfering in elections, etc.
Russia has no right whatsoever over sovereign nations. If you think otherwise, you can depart to the place the Russian warship was sent.
Russia didn't even participate in international diplomacy then.
If you mean the USSR, show me the signed, ratified treaty.
If you mean the then-current Soviet leadership was given private assurances by the then-current US Administration, well, why would you expect that to bind anyone beyond the terms of those leaders and one of the involved states?
This never happened, if it did please provide a link to the treaty text which proves it did.
That is factually incorrect. There is no treaty, no memorandum, no statement about that, except for some hearsay from a meeting between Baker and Gorbachev. This is the treaty about east Germany https://usa.usembassy.de/etexts/2plusfour8994e.htm and NATO, which the west has respected. Stop spreading misinformation.
What is correct is that Russia promised guarantees of Ukraine's borders in the Budapest memorandum.