Judging Freedom, 29 August edition: Lavrov means business! What is the bee presently in the Russian bonnet?

Today’s discussion with Judge Andrew Napolitano was far-ranging, though with U.S. responsibility for the Kursk invasion at its center.   If the Russians perceive the Kursk operation as a U.S. invasion of their country, then for what eventualities are they now preparing?  What does he mean when Sergei Lavrov suggests as he did a couple of days ago, that the U.S. is now playing with matches in a childish way, and may get its fingers burned? Are the Russians preparing for a direct nuclear strike on the Continental USA?