U.S. President Donald Trump used his Twitter account to announce to the world that he has cancelled a secret meeting that was due to take place this weekend at Camp David with Taliban leaders

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Editor’s Note (29 December 2016): Through the end of the year, BBC Capital is bringing back some of your favourite stories from 2016.
It was just one word in one email, but it triggered huge financial losses for a multinational company.
The message, written in English, was sent by a native speaker to a colleague for whom English was a second language. Unsure of the word, the recipient found two contradictory meanings in his dictionary. He acted on the wrong one.
Months later, senior management investigated why the project had flopped, costing hundreds of thousands of dollars. «It all traced back to this one word,» says Chia Suan Chong, a UK-based communications skills and intercultural trainer, who didn't reveal the tricky word because it is highly industry-specific and possibly identifiable. «Things spiralled out of control because both parties were thinking the opposite.»

When such misunderstandings happen, it’s usually the native speakers who are to blame. Ironically, they are worse at delivering their message than people who speak English as a second or third language, according to Chong.
«A lot of native speakers are happy that English has become the world’s global language. They feel they don’t have to spend time learning another language,» says Chong. «But… often you have a boardroom full of people from different countries communicating in English and all understanding each other and then suddenly the American or Brit walks into the room and nobody can understand them.»

The non-native speakers, it turns out, speak more purposefully and carefully, typical of someone speaking a second or third language. Anglophones, on the other hand, often talk too fast for others to follow, and use jokes, slang and references specific to their own culture, says Chong. In emails, they use baffling abbreviations such as ‘OOO', instead of simply saying that they will be out of the office.
«The native English speaker… is the only one who might not feel the need to accommodate or adapt to the others,» she adds.
Relating to your audience
With non-native English speakers in the majority worldwide, it’s Anglophones who may need to up their game.

The non-native speakers, it turns out, speak more purposefully and carefully, typical of someone speaking a second or third language. Anglophones, on the other hand, often talk too fast for others to follow, and use jokes, slang and references specific to their own culture, says Chong. In emails, they use baffling abbreviations such as ‘OOO', instead of simply saying that they will be out of the office.
«The native English speaker… is the only one who might not feel the need to accommodate or adapt to the others,» she adds.
Relating to your audience
With non-native English speakers in the majority worldwide, it’s Anglophones who may need to up their game.

Typically, native English speakers dominate meetings about 90% of the time — Michael Blattner

«Native speakers are at a disadvantage when you are in a lingua franca situation,» where English is being used as a common denominator, says Jennifer Jenkins, professor of global Englishes at the UK’s University of Southampton. «It's the native English speakers that are having difficulty understanding and making themselves understood.»
Non-native speakers generally use more limited vocabulary and simpler expressions, without flowery language or slang. Because of that, they understand one another at face value. Jenkins found, for instance, that international students at a British university understood each other well in English and swiftly adapted to helping the least fluent members in any group.