Looks like confirmation that they have no intention of stopping at Ukraine, assuming they get the chance:-
The head of the self-proclaimed Donetsk People’s Republic (DPR), Denis Pushilin, has restated the expansionist military aims of Russia’s invasion, saying “Our task is to liberate all Russian cities that were founded by Russian people during the time of the Russian Empire, and developed during the Soviet Union thanks to the help of our entire vast country. And this is not only the territories of Novorossia [the Donbas], but also much wider. It will not be any other way.”
https://www.theguardian.com/world/live/2022/sep/02/russia-ukraine-war-live-news-updates-un-nuclear-team-zaporizhzhia-power-plant-moscow-warns-moldova-against-attack-latest