Russian General Yevgeny Buzhinsky warned that NATO countries may be attacked if they allow Ukraine to use its air bases. The general specifically cited Poland and Romania as targeted countries.
From Remix:
Polish Prime Minister Mateusz Morawiecki said that Poland is consulting with allies on further Ukraine aid and did not exclude the possibility of donating aircraft to Kyiv. President Joe Biden, however, said the U.S. would not donate F-16 fighter jets to Ukraine.
