Poland's government is closely monitoring Russia's movements in Ukraine to prepare for the Kremlin's "potential use of nuclear or chemical weapons," Deputy Defense Minister Marcin Ociepa said Wednesday, Reuters reported.

He said the government believes Russian President Vladimir Putin "may reach for nuclear or chemical weapons," and Poland "must be prepared for all scenarios.”

Polish President Andrzej Duda, Prime Minister Mateusz Morawiecki, national security ministers and Polish military leaders met Tuesday to discuss aid to Ukraine and the course of the war, including Russia's "nuclear threats."

The head of Poland’s National Security Bureau, Jacek Siewiera, said after the meeting that the leaders discussed the risks and consequences of using any kind of nuclear weapons in light of the changing characteristics of war as well as the approaching winter.

The secretary general of Poland's ruling Law and Justice party said Tuesday that the government may have to consider building a wall along about 220 kilometers of the country's border with Kaliningrad amid fears of a migrant influx.

“The hybrid war on the border continues,” said Krzysztof Sobolewski. “We must bear that in mind, because it’s a splinter off from Russia’s aggression on Ukraine.”