“Our source in diplomatic circles reports that Russia, through closed channels, transmitted a signal to Poland that it is ready to launch a preemptive strike on major Polish cities in the event that “anti-Russian support for Ukraine” continues with NATO weapons,
as well as promoting the initiative to bring in their peacekeepers,” Vertical
They also report that Russian diplomats in Warsaw are preparing to leave the country at the first signal.
Putin decided to scare Duda with war. Because he knows that if peacekeepers from Poland come in, the Russians are not ready to fight NATO.