Kim Jong-un

Pyongyang has stopped nuclear testing but officials say there is no evidence that nuclear stockpiles are decreasing.

"Both sides got some of what they wanted, but neither side got everything it was looking for."

One big outcome of the Singapore summit was commitment to accountability for the missing from the Korean War.

The U.S. is also prepared should North Korea resume test missile launches, officials said.

The defection was the first one involving a military officer since 2008 and the 14th involving a soldier since 2000.

Even without a final resolution, it is already clear which winners and losers are emerging.

Promises of North Korea's good behavior in return for concessions from the U.S. have not worked in the past.

In Saturday tweets, President Trump expressed his enthusiasm for face-to-face talks with Kim.

The White House put tough conditions on the proposed summit with North Korea.