Defense Secretary Jim Mattis said Friday the cold feet on a U.S.-North Korea summit may have just warmed back up after President Donald Trump floated the idea that the summit could be back on.

“We have got some, possibly, some good news on the Korea summit, where it may, if our diplomats can pull it off, may have it back on even,” Mattis told reporters outside the Pentagon, where he waited to greet Denmark’s defense minister.

“Our president just sent out a note about that a few moments ago,” Mattis continued. “That is a usual give and take, you know, of trying to put together big summits and stuff. The diplomats are still at work.”