European Jewish leaders have warned against the rise of populism, with one claiming that the threat to Jews on the continent is at its highest since World War II.

Speaking to Newsweek via email ahead of Holocaust Memorial Day, marked Friday, Moshe Kantor, the president of the European Jewish Congress, also said Jewish faith and culture continues to “thrive” across Europe in 2017.

But he warned: “Today Jews in Europe are also facing a threat unique to our people.”