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

Instead, a hot-mic incident captured Prabowo requesting Trump to arrange a call with his son Don Jr, both of whom hold positions at the family business.

This was just one in a string of gaffes committed by world leaders thinking no one can hear them.

Here are five other memorable blunders:

Organ Transplants and Immortality

During a defense ceremony in Beijing in early autumn, Chinese President Xi Jinping and Russian President Vladimir Putin were overheard talking about organ transplants as a approach for extending lifespan.

"Human organs can be continuously transplanted. The more you extend your life, the younger you become, and you can even reach eternal life," the Russian translator was heard saying.

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

Dialogue heard between China's leader Xi Jinping and Moscow's head Vladimir Putin

'Sea Rising at Your Door'

Former Australian border protection chief Peter Dutton faced criticism in 2015 when he joked about the situation of people in the Pacific facing ocean encroachment.

Dutton was speaking to former PM Tony Abbott, who had just returned from climate change 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: "Schedules become irrelevant when you're about to have water lapping at your door."

These remarks provoked anger from Pacific Islands and environmentalists, while the opposition Labor party demanded Dutton to apologise.

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

'Prejudiced Voter'

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

Still wired up to a broadcast microphone when he got into his vehicle, Brown was heard saying: "That went terribly – they should not have placed me with that woman. Who thought of that? Ridiculous."

Asked what she had said, he answered: "All topics, she was just a prejudiced person."

The scandal dominated headlines for an extended period and Brown ultimately lost the political race.

'I Can't Stand Netanyahu. He's a Liar.'

Former US president Barack Obama was in discussion at the G20 summit in Cannes in 2011 with then French president Nicolas Sarkozy when their remarks about Israel's prime minister Benjamin Netanyahu were captured by a active recording device.

Sarkozy said: "I cannot bear Netanyahu. He's a liar."

Per a account from a French interpreter quoted by Reuters, Obama replied: "You're fed up with him but I must work with him more often than you."

'Major League ***hole'

A classic recording incident from former White House hopeful George W. Bush occurred when he made a negative comment about a reporter from The New York Times.

The GOP candidate was didn't realize that a recording device was active when he leaned over to Dick Cheney at a political event and remarked, "That's Adam Clymer, complete jerk from the New York Times."

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

Bush at a political gathering in 2000