SBS World News Radio: European Union nations are calling for unity, following a series of provocative comments from US President-elect Donald Trump.
In an interview Mr Trump said he believes NATO is "obsolete" and more EU member states would leave the bloc.
He also praised the UK's Brexit vote, and criticised Germany's migrant policy.
In a broad-ranging interview Mr Trump made it clear he was not looking to make new friends within the European Union.
He was particularly critical of German Chancellor Angela Merkel over a policy that let more than one million migrants into her country.
"I felt she was a great, great leader. I think she made one very catastrophic mistake and that was taking all of these illegals in, taking all of the people from wherever they come from. And nobody really knows where they come from. You'll find out."
He also described the NATO alliance as "obsolete" and predicted more states would leave the EU.
Angela Merkel has dismissed his comments, saying Europe's fate is in its own hands.
"I'll continue to work for an efficient cooperation between the 27 member states. The President-elect made his points again. Once he's in office, which he's not at the moment, we will of course work together with the American government, then we will see what sort of cooperation we can achieve."
Mr Trump described himself as a big fan of Britain, endorsing last year's Brexit vote to leave the European Union.
Those comments have been welcomed by British Foreign Secretary, Boris Johnson.
"I think it's very good news that the United States of America wants to do a good free trade deal with us and wants to do it very fast and it's great to hear that from President-elect Donald Trump. Clearly it'll have to be a deal that's very much in the interests of both sides but I've no doubt that it will be."
Mr Trump's comments are just the latest to alienate foreign powers and shake up alliances.
Many of Donald Trump's comments have been made on Twitter, and in the interview he suggested that would not change following his inauguration.
Mr Trump told the interviewer he had planned to post less on Twitter, but needs to counter what he describes as "dishonest" media reporting.
At a meeting of E-U leaders, Danish Foreign Minister Anders Samuelson was critical of what he describes as "Twitter diplomacy".
"We'll have to wait and see what is going to be the reality because we are going to move away, I guess, from a kind of Twitter diplomacy and into a reality and the reality is sometimes quite difficult and perhaps more difficult than what is going on on Twitter."
E-U foreign policy chief Federica Mogherini has responded to Mr Trump's latest comments with a call for unity, saying she believes the EU will stick together.
"I respect the opinions of the future President of the United States - President-elect, almost-President (Donald Trump) - but I think the European Union will be okay in the future."
That sentiment has been backed by French Foreign Affairs Minister, Jean-Marc Aryault.
"You know, the best answer to the interview of the American president who will take up his post on January 20, is unity among Europeans. There was quite a lot about Europe in this interview and as Brexit was also discussed, the best way to defend Europe -- and it's a bit what Mr Trump has advised us to do -- is to stay united as a bloc and to not forget that Europeans' strength is their unity."
