On Thursday, during a debate with Donald Trump, President Joe Biden labeled Russian President Vladimir Putin a "war criminal" and warned of potential invasions beyond Ukraine, suggesting threats to Poland and other regions.

At Thursday’s debate with Donald Trump, President Joe Biden, calling Russian President Vladimir Putin a “war criminal,” claimed that he “wants all of Ukraine. … Do you think he’ll stop? … What do you think happens to Poland and other places?”

Spoiler Alert: Of...