Experts sceptical of North Korea's denuclearisation promise

A decision by North Korea to halt all testing of nuclear missiles has received a mixed reaction from around the world.

Some have praised Kim Jong-un - but others are questioning his intentions, with fears it's nothing but an empty promise.

The reaction to the announcement that North Korea would stop launching missiles and close down its nuclear testing site was swift, with US President Donald Trump tweeting his support.

Nikki Haley, US Ambassador to the United Nations, says sanctions have worked.

"The security council really came together and was able to enforce sanctions on North Korea, isolate them until they had good behaviour, now we're seeing they want to come to the table."

But others are more sceptical, and point out Mr Kim is not talking about giving up his existing nuclear weapons.

"This is after all Kim Jong-un, a cunning political player who's in there to last through and endure," says Professor John Blaxland, ANU Security Expert.

"It's going to mean something quite different to Kim Jong-un than it means to the United States of America, and so the details here will matter," says former US negotiator Wendy Sherman.

"I don't think for one minute that Kim has in mind that he's going to destroy his nuclear weapons."

The details will be discussed during a rare summit between North and South Korea next week.

The meeting will set the tone for a similar face to face between Mr Kim and Mr Trump which is planned for either late May or early June.