«Poland is also a member of the North Atlantic Treaty Organization, covered by the United States and 29 other Western allies’ commitment to its defense if attacked. More than 10,000 American troops are stationed in Poland, and 80 percent of military hardware heading for Ukraine passes through Polish transit points.

So what’s it worried about?

Beyond Russia’s snarling, there is a simple explanation: Donald Trump.»

https://www.washingtonpost.com/opinions/2023/11/20/europe-military-defense-russia-trump/

And not just the single person of Trump, obviously, but the American tendency toward isolationism.