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This week, Indonesian President Prabowo Subianto believed he was a confidential discussion with American leader Donald Trump during Middle East peace talks in Egypt.

However, a hot-mic incident captured Prabowo requesting Trump to arrange a meeting with his son Eric, who hold positions at the family business.

It represented only one in a string of gaffes committed by world leaders when they assume no one can hear them.

Here are five other noteworthy blunders:

Organ Transplants and Everlasting Life

During a defense ceremony in Beijing in early autumn, Chinese President Xi Jinping and Russia's head Vladimir Putin were recorded discussing organ replacement as a method for prolonging life.

"Human organs can be continuously replaced. The longer you live, the younger you become, and you can even achieve immortality," Putin's interpreter was heard saying.

Xi, who was not visible, responded in Chinese: "Some predict that in the current era humans may live to 150 years old."

Dialogue heard between Chinese president Xi Jinping and Moscow's head Vladimir Putin

'Water Lapping at Your Door'

Ex-Australia immigration minister Peter Dutton faced criticism in 2015 when he made light about the plight of residents in the Pacific experiencing ocean encroachment.

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

Noting that a meeting about refugees was running on "Cape York time", Abbott replied: "There was a bit of that up in Port Moresby."

Dutton commented: "Time doesn't mean anything when you're about to have water lapping at your door."

The comments sparked outrage from regional nations and environmentalists, while the opposition Labor party demanded Dutton to apologise.

Peter Dutton recorded making jokes with Tony Abbott about rising sea levels

'Bigoted Woman'

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

Remaining connected to a broadcast microphone when he entered the car, Brown was recorded stating: "That went terribly – they should never have put me with that individual. Whose idea was that? Ridiculous."

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

This incident received extensive coverage for weeks and Brown went on to lose the political race.

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

Ex-American leader Barack Obama was in conversation at the G20 summit 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 cannot bear Netanyahu. He deceives."

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

'Major League ***hole'

A classic hot-mic moment from then US presidential candidate George W. Bush happened as he made a negative comment about a journalist from The New York Times.

The GOP candidate was unaware that a recording device was active when he turned to Dick Cheney at a Labor Day rally and said, "There's Adam Clymer, major league asshole from the New York Times."

Cheney answered: "Oh yeah, that's true, big time."

Bush at a political gathering in 2000