Let's now get an expert insight on the cancellation of the much anticipated North Korea- U.S. summit and what this may mean for not only North Korea and the U.S. but also for South Korea.
I'm now joined on Skype by David Schmerler, a Research Associate at the James Martin Center for Nonproliferation Studie.
So David, what would this mean for North Korea- U.S. relations?

And hours after Trump canceled the summit, North Korea responded by saying that it's still willing to resolve issues with the U.S.
What path do you think North Korea will take from here?

President Trump apparently didn't tell South Korea about his decision when he met with President Moon in Washington this week.
With that in mind, what was Seoul's reaction to all this?

But the U.S. did leave the door open for renewing the diplomatic thaw.
So what are the chances that we might see the summit take place at a later date?

Now, Trump's letter came just after North Korea announced it had completely dismantled its Punggye-ri nuclear test site to (QUOTE-UNQUOTE) "ensure the transparency of discontinuance of nuclear test".
Is there any significance to the timing of the cancellation?

Thank you so much for your insight today.
Again, that was David Schmerler,... Research Associate at the James Martin Center for Nonproliferation Studies giving us his insight on Trump's cancellation of the North Korea-U.S. summit and the dismantlement of the Punggye-ri nuclear test site.