Related question on Metaculus:
In May 2022, Forbes journalist Michael Peck wrote, "So far, there are no public indications that Ukraine is contemplating sending ground troops into Russia." Forbes quoted retired Australian general Mick Ryan saying, “Militarily, there is little utility in going into Russian territory. It is a massive country with a vast network of military infrastructure. A limited incursion would have almost no military impact.”
Several incidents have been reported in Western Russia after the Russian Invasion of Ukraine began. Russia has attributed some of these incidents to Ukrainian perpertrators, but as of October 20, 2022, Ukraine has not claimed responsibility for any of the events.