“How could they live in a country where they’d been treated so terribly?”
The conference was hosted by Chancellor of Austria Sebastian Kurz, with the participation of prime ministers of Australia, Norway, Denmark, Greece and Czech Republic.
In the 21st century, people are still being murdered, synagogues and Jewish shops are being attacked, and graves in Jewish cemeteries are being defaced.
"Even dealing with the new virus, which demands solidarity and collaboration, has not managed to obliterate the old plague, the plague of antisemitism," President Rivlin said.
Austria had already admitted fumbling intelligence from Slovakia that the 20-year-old gunman had attempted to buy ammunition there.
Fifteen arrests have been made since the attack, but Interior Minister Karl Nehammer conceded on Wednesday that "some things went wrong" in processing intelligence from neighboring Slovakia in July.
"Before the terror attack began, according to the information currently available, some things also went wrong."
"If the same thing were to happen again today, I would do the exact same thing without a second thought. Because we live in Austria, we stand with Austria."
The prime minister made the remarks ahead of his meeting with Romanian Prime Minister Ludovic Orban, who is visiting Jerusalem for the first time.