NATO faces a “pre-war era” in which “literally any scenario is possible” given the potential for aggression from Russia, according to Poland’s prime minister, the latest evidence that allies see a growing likelihood of major conflict.

“Literally any scenario is possible,” Polish Prime Minister Donald Tusk told a group of journalists in a newly-published interview. “I know it sounds devastating, especially to people of the younger generation, but we have to mentally get used to a new era. We are in a pre-war era. I don’t exaggerate. This is becoming more and more apparent every day.”