Neil Farren, a Eurovision commentator live-blogging contest preparations in Tel Aviv, said the visibly heightened security and briefings on air raid sirens and bomb shelters likely rattled some contenders, who have so far remained tight-lipped about the political situation.
"We are in a situation now that is a bit odd".
"We have an artist who would like to participate in the Eurovision Song Contest, and who we would love to welcome on that stage".
Israel has launched a PR campaign to counter calls for a boycott of the Eurovision contest by the global Boycott, Divestment, Sanctions (BDS) movement.
The pop star is due to appear on Saturday May 18 and is expected to perform two songs, including a classic track and a new single. But for that we need to have the framework secured.
But how did the singer - whose voice was once described by U.S. singer-songwriter Ben Folds as "one of the best in the world" - fare in her bid to make it through to the grand final?
Some pro-Palestinian activists have called for performers and worldwide broadcasters to boycott the show due to Israel being the host nation. Eurovision tradition holds that the winning nation hosts the following year's event.
In January, British figures including Dame Vivienne Westwood, Peter Gabriel, Roger Waters, Mike Leigh, Maxine Peake and the band Wolf Alice signed a letter calling on the BBC to cancel coverage of the 2019 song contest.
This Eurovision recap is absolutely chock-full of spoilers, so only continue reading if you've watched the first semi-final - or alternatively, keep reading if spoilers are your jam.
Last week, the ministry released a report saying that BDS activists had used bots and 232 fake Twitter accounts calling for the boycott of Eurovision.
The contest - which gets underway with the first semi-finals tonight - will take place this year in Tel Aviv after Israel's Netta Barzilai won last year's contest.
Miller-Heidke will have to do it again on Saturday May 18 to win the controversial competition, which critics say has been used to whitewash the global reputation of Israel and its treatment of neighbouring Palestine.
"My heart breaks every time I hear about the innocent lives that are lost in this region and the violence that is so often perpetuated to suit the political goals of people who benefit from this ancient conflict", Madonna said.
She says she prays for "a new path toward peace".