Technically he's correct about the right, NATO agreed not to expand east back in the day and then violated that. I haven't seen the evidence that they could bury everyone though.
The topic of 'NATO expansion' was never discussed; it was not raised in those years. I am saying this with a full sense of responsibility. Not a single Eastern European country brought up the issue, not even after the Warsaw Pact had ceased to exist in 1991. -- Gorbachev
So yeah this is another case of russia bending history to fuel their victim complex.
Technically yes isn't yes tho. I mean Russia will do anything to justify itself. The difference between NATO expansion and Russian expansion, Russia engages military operations while countries are trying to join NATO to protect themselves from Russia
so to be clear on the original point, NATO hasnt broken any treaty and its 'expansion' is people wanting to join so that they dont get invaded by russia