Earlier quoted context omitted.
There are plenty. Russia is hardly a paragon of honestly, but from the Russian perspective there are plenty of examples to draw from about Western leaders ignoring agreements. The first and most obvious is this: https://nsarchive.gwu.edu/briefing-book/russia-programs/2017... Then comes the withdrawal from various nuclear treaties, the first being this: https://carnegieendowment.org/2021/12/13/u.s.-exit-from-anti... G…
> The first and most obvious is this... If Russia thinks a verbal assurance from the US SecState to a different country can bind NATO thirty years later as if it were a treaty, they're hopelessly naive. (They're not, of course. They know this is bullshit.)
Regardless of whether you think the Russians were hopelessly naive or full of shit, it is a promise broken. Remember, we're talking about negotiations, so their opinion matters too, regardless what you or I think about it.