The U.S. is preparing another round of sanctions targeting North Korea, a White House official said Thursday, as Washington, Seoul and Tokyo look to bolster “extended deterrence” in the face of Pyongyang’s repeated missile tests.

U.S. National Security Advisor Jake Sullivan teased the new measures during an event in Seoul co-hosted by The JoongAng Daily and the Washington-based think tank Center for Strategic and International Studies (CSIS).

“We have a new set of sanctions measures coming forward as we speak,” Sullivan said in response to a question about the Biden administration’s North Korea policy. “We are prepared to meet without