President Lee Jae-myung  received a briefing from Joint Chiefs of Staff(JCS) Chairman Adm. Kim Myung-soo on his first day in office and called for maintaining a thorough readiness posture against North Korea, based on a combined defense posture with the U.S. 

After receiving a briefing about the transfer of the presidential right to command the military Wednesday morning, Lee also urged the military to keep tabs for movements in the North.

According to the presidential office, Lee recognized the armed forces' devotion to safeguarding the nation and expressed confidence in their loyalty as well as operational capability.

The president also praised the military's "passive response" against "unlawful orders" during the December 3 martial law, crediting it for preventing major public disorder.

After the JCS chairman's briefing on the North's military trends, Lee requested the military's best efforts to ensure the public won't have to worry about national security.