BREAKING news: Australia is building a fence on the border of Slovenia. At least, according to cable news channel CNN.

The latest in a series of hilarious fails by the US TV station proves what we already knew — Americans just aren’t very good at world geography.

The 24-hour news channel is being relentlessly mocked on social media after confusing Australia with Austria in a news report.

Either that, or whoever is in charge of the captioning at CNN probably needs a bit of a refresher.

US writer Matthew Yglesia picked up on the unfortunate blunder and kickstarted even more jokes with this tweet:

This seems a little paranoid for an island nation thousands of miles away. pic.twitter.com/6jTLYhGwqz — Matthew Yglesias (@mattyglesias) February 29, 2016

When you're too American to know the difference between Austria and Australia https://t.co/EF2scGWECF — Tweets From Aleppo (@halabtweets) February 29, 2016

It really must confuse the yanks that there's a country called Austria & Australia! https://t.co/SfMK6JOrTQ — YES2 removing tories (@YESthatcherDead) February 29, 2016

@mattyglesias @banas51 Don't tell Malcolm or he'll send a dozen subs to defend our fence on the Slovenian border. #auspol — citizen grafiti (@grafiti) February 29, 2016

@mattyglesias They are just upset Austria won all those Oscars. — Malcolm Farr (@farrm51) February 29, 2016

CNN and its problem with geography:Australia makes fence on the border with Slovenia!!! (Instead Austria) and they should inform us!OMG — Owl Girl فتاة البومة (@SaraWmd) March 1, 2016

@BamStroker that's one very active Border Force if they are going that far. Ohhh CNN....There's no Kangaroos in Austria #CNN — Scipio Artelius (@eveScipio) March 1, 2016

Just a few of CNN’s recent reporting gaffes include:

• When they mistook a dildo-decorated banner for an ISIS flag during a live cross.

Flag depicting dildos to mock ISIS used at London #pride parade. CNN thinks it's real and reports it as breaking news pic.twitter.com/F7v1oiInWn — Nara Hodge (@NaraHodge) June 27, 2015

• When they got their sums mixed up and ended up with a total of 110 per cent in the Scottish independence referendum.

At least no matter what Scotland decides, they are giving it 110%. #ScotlandDecides #CNN pic.twitter.com/fl9dzQlaYL — Brady (@burninggoats) September 18, 2014

• And then there was that time they accidentally captioned a photograph of Vladimir Putin ‘Jihadi John’.

We get it, geography can be confusing sometimes. Just ask this Wheel of Fortune couple.