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Poland summoned Israel’s ambassador on Friday and threatened to scupper a Jerusalem diplomatic summit after reported comments in which Benjamin Netanyahu appeared to accuse the Polish nation of complicity in the Nazi Holocaust.

A spokesman for the Israeli prime minister, who was in Warsaw for a U.S.-sponsored Middle East conference, said Netanyahu had been misquoted by The Jerusalem Post, which issued a corrected story.

But Poland, where sensitivities over the issue of its behavior during the Holocaust are high, called in Israeli envoy Anna Azari and said doubts remained about what Netanyahu said.

The matter of Poland’s conduct during the Holocaust – in which many of the six million Jewish dead were killed in Nazi camps on Polish soil – was at the center of an Israeli-Polish diplomatic dispute last year.