The U.S. will not engage in talks with North Korea until it ceases its nuclear and missile tests, U.S. Secretary of State Rex Tillerson has said, in comments quoted by a South Korean special presidential envoy on Thursday afternoon Washington DC time.

Hong Seok-hyun, a special envoy to Washington for South Korean President Moon Jae-in, told media that Secretary Tillerson wanted Pyongyang to understand that the U.S. would not engage in hostility against the country.

“There will be no regime change, we will not invade, and the North’s system will be guaranteed,” Tillerson reportedly told Hong, during a roughly 40-minute meeting.