From here: NATO Fractures: In U-Turn, Poland Announces It Will No Longer Arm Ukraine | ZeroHedge "Poland will no longer arm Ukraine to focus on its own defense," Polish prime minister Mateusz Morawiecki announced just hours after Warsaw summoned Ukraine's ambassador related to a fresh war of words and spat over blocked grain exports, according to the AFP. Warsaw has throughout more than a year-and-a-half of the Ukraine-Russia war been Kiev's staunchest and most outspoken supporter.”
Maybe Poland is getting nervous, Putin always refers to them, and they might not want to be the nuclear battlefield everybody talks about.