South Korea’s President on Friday said that the recent deployment of U.S. strategic assets to the Korean peninsula has had a “very strong” deterrence effect on North Korea and called for Washington to expand rotational deployment.

U.S. Secretary of Defense James Mattis held a 50-minute meeting in Seoul with President Moon Jae-in at 1430 KST.

“I believe the deployment of the strategic assets on the Korean peninsula that the U.S. has been actively pursuing of late acts effectively as a very strong deterrent to provocations by North Korea,” Moon said at the beginning of the meeting.

Moon did not specify