Poland is a NATO member country, which means that they are supposedly under the protection of the North Atlantic Treaty, which says in Article 5 that any attack on any NATO member country “in Europe or North America shall be considered an attack on them all, “and that means that the other NATO member countries would be expected to come to the defense of the NATO member country that is attacked.
The fact that the Biden Administration changed its mind about giving Polish MiGs to Ukraine after Poland said that the planes should be transferred from the US airbase in Germany instead of from an airbase in Poland suggests the United States and other NATO member countries would not have come to Poland’s defense if it had been attacked by Russia, and that suggests that Article 5 in the North Atlantic Treaty is essentially just words on a piece of paper.