They're Shahed drones, used by Russia.
What's true though? I don't believe that I have a way to find out.
And just on first principles, how stupid would the Ukrainian have to be to do such a thing to their biggest ally? It almost beggars belief.
They would love to have a cause to involve anything NATO.
And for the first principles you are surely didn't miss: https://www.bbc.com/news/articles/cr7xzg3dmj8o