Poland's prime minister, Donald Tusk, says authorities thwarted a plan to kill a Ukrainian-American in Warsaw that he described as being "on the order of Russia."

AP reported that Tusk presented the case as an attempt to target a US citizen on the territory of a NATO member state. The report did not identify the intended target or set out public evidence, named organisers or court documents.

An allegation on NATO's eastern flank

The allegation comes amid continuing concern in Poland and other eastern-flank states about sabotage, intelligence activity and other forms of pressure linked to Russia's war against Ukraine.

This is an official Polish allegation, not a publicly adjudicated case.

What remains undisclosed

For now, the claim stands as Poland's official account. Any fuller assessment will depend on disclosed investigative evidence, legal proceedings and a response from Russian authorities.