General Discussion

They would have to go over either Ukrainian or Romanian airspace, and that's not going to happen at this point in time. In order to reach it by land, they would first have to take Odesa, which they're nowhere near to doing, and would be insanely expensive both in casualties and equipment.

I've seen images of that massive depot in Transnistria. It would be a piece of cake for Ukraine to blow it up, but it would make a really big boom.