One of the golden rules for politicians is to always have the microphone in front of them turned on, but not everyone remembers this.

Canadian Prime Minister Justin Trudeau recently fell into an awkward position when many people thought it was deliberately mocking US President Donald Trump. At the reception on the sidelines of a NATO summit at Buckingham Palace on the evening of December 3, he casually chatted with the leaders of England, France and the Netherlands, not expecting that the camera was recording the conversation.

NATO leaders were caught mocking Trump.

During the conversation, Trudeau said that French President Emmanuel Macron was late because Trump was busy listening to the media 40 minutes when the two leaders met bilaterally and said "his team was gasping in shock" after hearing The president announced that he would hold next year's G7 conference at Camp David.

Although not directly mentioning Trump's name, Trudeau was still in trouble when the US President criticized him as a "double-sided man". In the political world, Prime Minister Trudeau is not the only leader who has encountered such a "mouth" problem.

In 1984, at the height of the Cold War, then-US president Ronald Reagan nearly blew up a dangerous military conflict. When trying the microphone before speaking on the radio, Reagan joked to the NPR audio technicians: "Dear Americans, today I am pleased to inform you that I have just signed through the laws that will block Russia forever. We will start bombing in 5 minutes. "

Reagan's comment did not air, but was re-recorded and the record leaked out. As a result, Soviet troops were immediately placed on high alert in the Far East. President Reagan's speech also faced severe criticism from the Soviet Union.

In 2005, French President Jacques Chirac caused a stir when making comments about the cuisine of other countries. According to the French newspaper Libération, he was speaking to his Russian and German partners at an event to celebrate the 750th anniversary of the founding of Kaliningrad. Thinking that the microphone was off, Chirac criticized British food.

"You cannot trust such bad cookers. After Finland, they (the UK) are the countries with the worst food. The only thing you bring to European agriculture is mad cow disease," he said. .

This comment has not been made public, but Chirac's media team has never denied it. The announcement came amid a chilling Anglo-French relationship as the two countries argued over agricultural subsidies and Paris decided not to join the Iraq war.

In 2006, at the G8 summit in St. In Petersburg, a private conversation between British Prime Minister Tony Blair and US President George W. Bush was recorded by the microphone.

During the conversation, President Bush seemed to greet Prime Minister Blair very comfortably: 'Yo, Blair, how are you? ". Bush then thanked Blair for the gift of a sweater and made a comment about the force. Hezbollah intake in Lebanon.

Bush's use of the phrase "Yo Blair" was ridiculed by the political rivals of both leaders, but some reporters argued that in fact President Bush said "Yeah Blair".

In 2010, while talking to voters in Rochdale, North England, then British Prime Minister Gordon Brown was questioned by a woman on a series of questions about immigration.

After the conversation, Brown got into the car with the microphone of the Sky News channel still on his shirt. Not knowing the microphone was still on, he told an adviser that the conversation earlier "was a disaster". "They shouldn't let me face that woman," he added.

When asked what the woman said, he replied, "All! She is a blind old woman who claims to have been a Labor Party member. It's ridiculous."

Prime Minister Brown later visited the woman, Gillian Duffy, to apologize and repeat his apology in an interview with BBC Radio 2.

In 2011, a conversation between French President Nicolas Sarkozy and US President Barack Obama on the sidelines of the G20 summit held in France was accidentally heard by reporters.

Not long before a press conference, reporters were given interpreting equipment but asked to plug in headphones only when the two leaders' behind-the-scenes conversation ended.

Many reporters ignored the instructions and heard President Sarkozy tell President Obama about Israeli Prime Minister Benjamin Netanyahu.

"I can't stand him anymore. He's a liar," Sarkozy said. "You may hate him but I, I have to work every day with him," Obama replied.

A few days later, the French media kept the conversation private, but eventually French news site Arret sur Images posted the story. The exchange partly showed the tense relationship between France and the United States with Israel at that time.