[Boogieman]

“How could Russia invade Moldova, the borders of which are with Ukraine and Romania?”

You realize that the Russian army already has troops inside the borders of Moldova, right?

[Wallace T.]

I was aware of the Russian troops in the Transnistria area. They number 1,500, with about 6,000 Transnistria militia. They are there at the sufferance of Moldova, Ukraine, and Romania. Remember that Moldovans are ethnically Romanian, and Romania would not want Russia on their border again.