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Recently, Indonesian President Prabowo Subianto thought he was having a private conversation with US President Donald Trump at the Gaza peace summit in Egypt.

However, a hot-mic incident revealed Prabowo asking Trump to arrange a call with his son Don Jr, who hold positions at the family business.

This was just one in a string of missteps committed by world leaders when they assume no one can hear them.

Here are five other noteworthy errors:

Organ Transplants and Immortality

During a defense ceremony in Beijing this September, China's leader Xi Jinping and Russia's head Vladimir Putin were overheard talking about organ transplants as a approach for prolonging life.

"Human organs can be repeatedly transplanted. The longer you live, the younger you become, and it's possible to even achieve immortality," Putin's interpreter was recorded stating.

Xi, who was not visible, answered in Chinese: "Experts forecast that in the current era humans may live to 150 years old."

A conversation recorded from Chinese president Xi Jinping and Moscow's head Vladimir Putin

'Sea Rising at Your Door'

Ex-Australia immigration minister Peter Dutton came under fire in 2015 when he made light about the plight of residents in the Pacific experiencing rising sea levels.

Dutton was speaking to then-prime minister Tony Abbott, who had recently come back from environmental talks with regional heads in Port Moresby.

Noting that a migration discussion was running on "Cape York time", Abbott responded: "There was a similar situation up in Port Moresby."

Dutton commented: "Time doesn't mean anything when you're about to have the ocean reaching your home."

The comments provoked anger from Pacific Islands and environmentalists, while the opposition Labor party called for Dutton to apologise.

Peter Dutton overheard joking with Tony Abbott about coastal flooding

'Prejudiced Voter'

As Labour prime minister Gordon Brown was on the trail in 2010, he encountered a voter who challenged him on immigration and the economy.

Still wired up to a Sky news microphone when he entered the car, Brown was recorded stating: "That was a disaster – they should not have placed me with that woman. Whose idea was that? Ridiculous."

When questioned about she had said, he replied: "Everything, she was just a bigoted woman."

This incident dominated headlines for an extended period and Brown ultimately lost the political race.

'I Cannot Bear Netanyahu. He's a Liar.'

Former US president Barack Obama was in discussion at the international conference in Cannes in 2011 with France's leader Nicolas Sarkozy when their comments about Israeli leader Benjamin Netanyahu were picked up by a live microphone.

Sarkozy said: "I can't stand Netanyahu. He deceives."

Per a version from a translator cited by Reuters, Obama replied: "You've had enough but I have to deal with him frequently than you."

'Major League ***hole'

A vintage hot-mic moment from former White House hopeful George W. Bush happened as he made a negative comment about a reporter from The New York Times.

The GOP candidate was unaware that a recording device was active when he leaned over to Dick Cheney at a Labor Day rally and remarked, "There's Adam Clymer, complete jerk from the New York Times."

Cheney responded: "Absolutely, he is, big time."

Bush at a political gathering in 2000