National security adviser John Bolton on Sunday said he won’t speculate on commercial satellite images that appear to show North Korea rebuilding a nuclear launch site but signaled that Kim Jong Un knows where President Trump stands on missile tests.

“I’d rather not get into the specifics on that,” Bolton said on ABC’s “This Week.” “The United States government – I’ll just put it this way – spends a lot of resources and efforts so we don’t have to rely on commercial satellite imagery. We’ve seen a lot in North Korea. We watch it constantly.”

“There’s a lot of activity all the time in North Korea, but I’m not going to speculate on what that particular commercial satellite picture shows,” Bolton told the news show.

He said Trump has been very clear that he views the absence of missile testing by North Korea as a positive sign of his negotiations with Kim and wouldn’t be happy if the regime began conducting them again.

“As the president said, he’d be pretty disappointed if Kim Jong Un went ahead and did something like that,” Bolton said. “I think Kim Jong Un has a very clear idea where the president stands.”

The Center for Strategic International Studies’ Beyond Parallel last week published satellite images from March 6 and March 8 that shows new activity on a launch pad in northwestern North Korea consistent with preparations for a missile or satellite launch.

The Sohae facility has been inactive since the first summit last June between Trump and Kim in Singapore.

Images of the renewed activity follow their second summit in Hanoi at the end of last month.

Trump abruptly departed the meeting with Kim after talks broke down without a deal to denuclearize the Korean peninsula.

Asked about the possibility that Kim was gearing up for more rocket launches, Trump touted his relationship with Kim.

“I think it remains good. I would be surprised, in a negative way, if he did anything that was not per our understanding,” Trump told reporters as he left the White House on Friday to survey damage in Alabama.