VIENNA, Nov 18 (Reuters) - Austrian national broadcaster ORF, which will host next year's Eurovision Song Contest, said it wants Israel to take part despite several countries' objections and hopes it can host the biggest event in years despite boycott threats.

Eurovision, an annual feast of pop music and high camp from around Europe and as far afield as Australia, became embroiled in a dispute over the war in Gaza in 2025 and 2024 and was hit by street protests over Israel's participation.

The national broadcasters of five countries - the Netherlands, Slovenia, Iceland, Ireland and Spain - have called for Israel to be excluded from the contest over the number of civilians killed during Israel's war against Hamas.

Those broadcasters have said they will boycott the 70th song contest in Vienna or consider not taking part if Israel does.

"Now is the time for diplomacy," ORF Director General Roland Weissmann told a press conference when asked about talks ahead of next month's annual meeting of the European Broadcasting Union (EBU), at which the issue will be discussed and potentially voted on.

The EBU is an alliance of public broadcasters that organises and co-produces the annual event.

"We have used the time wisely, we have held diplomatic talks behind the scenes, and I am very, very optimistic that we will have a record number of participating broadcasters," he added.

Austria and Germany are among Israel's staunchest allies in the European Union, on account of their historical atonement for the Nazi Holocaust. They hope a U.S.-brokered ceasefire that took effect in Gaza on October 10 will soften opposition to Israel taking part.

Hamas-led militants took 251 hostages during the October 7 attacks on southern Israel and killed another 1,200 people, according to Israeli tallies. Israel's retaliatory offensive has killed nearly 69,000 Palestinians, health officials in the enclave say.

Three countries' broadcasters are likely to rejoin the song contest next year, organisers said: Romania, Bulgaria and Moldova. They withdrew over costs. Canada has also been reportedly considering joining, which would make it the Americas' first participant.

Asked if Canada should join, Weissmann said: "Hurrah, hurrah, Canada! Yes, of course. Everyone is welcome. We are happy to host the world."