Earlier quoted context omitted.
It's one of the oldest tricks in the book. Remember that Russia invaded and annexed Crimea "to save Russian citizens".
To be fair Crimea does have a majority ethnic Russian inhabitants. Wikipedia lists Crimea's demographics as 65% while others were lower at 58% or thereabout. Given many of those Russians were there from the Soviet era or direct descendants, it doesn't seem too crazy of a claim. The US and NATO countries have done worse for less. Now invading Ukraine? Thats another thing altogether.
There's a whole lot of the Southwestern US you are agreeing that Mexico can and should invade and occupy, with a much stronger case, if you claim that this justifies Russia in Crimea.