Donald Trump moved to dampen heightened expectations of a rapid nuclear deal with North Korea, saying the issue was far from over.
Excitement at the prospect of an end to tensions with the rogue state have risen ever since Trump stunned the world by accepting an invitation to meet Kim Jong Un, the country's leader.
At the weekend, Pyongyang announced it was suspending weapons tests and closing its nuclear testing site.
"Wow, we haven't given up anything and they have agreed to denuclearisation (so great for world), site closure, and no more testing," was Trump's immediate response.
But today the American President sounded an uncharacteristic note of caution on Twitter, a marked turnaround from his earlier claim of victory.