Donald Trump praises non-existent country of 'Nambia'

Donald Trump has praised the healthcare system of a country that doesn't exist.

"Nambia's health system is increasingly self-sufficient," the US President told African leaders at a lunch in New York on Wednesday (US time).

He also mentioned the fictional state during a list of countries present at the United Nations meeting.

An official transcript of the event provided by The White House corrected Mr Mr Trump's remarks to 'Namibia', assuming he didn't mean Zambia or Gambia - two other African countries with similar names.

Namibian President Hage Geingob declined to comment on the flub.

Namibia is a country of 2.5 million people on the African west coast, north of South Africa. The Washington Post reports it has economic ties with North Korea, so might not want to make a big deal out of Mr Mr Trump's faux pas.

The US has spent around US$1 billion helping Namibia fight AIDS and HIV, under an initiative started by former President George W Bush.

In June, Mr Trump coined a nonsensical new word, 'covfefe', in a bizarre tweet that created a social media storm.

Then-White House press secretary Sean Spicer insisted the tweet actually meant something.