Journalists are now crowding into the room at the JW Marriott for the press conference that will be chaired by US president Donald Trump.

Image source, Reuters

North Korea expert Andray Abrahamian tells the BBC what he thinks of the fact that there is now no deal.

"It’s bad. The window is small before the next election cycle in the US and momentum is hard to build between these two countries. But this whole process has been so unconventional thus far, who knows what will come next."

Here's the full statement from the White House.

While we wait to hear what kind of deal has been reached, and whether it includes the denuclearisation of North Korean, here's one point of view increasingly being voiced among North Korea watchers. Is it time to accept that North Korea has nuclear weapons, will not give them up, and that we need to just carry on building diplomacy with them? Have attempts to isolate and coerce them to give up their weapons failed and we just now have to move forward with a nuclear North Korea as a reality?

We can see his famous running bodyguards jogging beside his convoy in the background.

The talks between the two leaders have come to a premature end - now we wait to see what kind of deal (if any) they may have struck. Some believed that the US would press for North Korea's Yongbyon nuclear reactor to be shut down. The BBC's Laura Bicker earlier explained its significance. Whether they even got far enough to discuss this is not clear.

The security convoys have left the Metropole hotel, and could be headed to an early presser at the Marriott.

Image source, Reuters

Image source, Reuters

The convoys have left the Metropole hotel where they'd been talking. No idea yet what they've agreed, if anything.

With the convoy moving off, there's a flurry in the media centre as reporters get ready for any sign of developments.

The security convoy that has been on standby is now moving off - a possible sign that talks have ended.

The mood has shifted in the course of the last few hours, with some uncertainty now over whether the US and North Korea will emerge with a deal.

Earlier Mr Trump seemed optimistic, telling reporters: “No matter what happens we’ll ultimately have a deal that’s really good for Chairman Kim and his country... That’s where it’s all leading. It doesn’t mean we’re doing it in one day, in one meeting... I really believe with this great leadership North Korea... I really believe it’s going to be very successful.”

All the vehicles are in place but as yet we've seen no sign of the two leaders. In fact Mr Kim's security motorcyclists have just turned off their engines. A good pollution control measure, of course. But could it mean they've had word it'll take a while longer yet?