President Moon Jae-in says he feels responsible for concerns over a lack of discipline in the military, adding he is responding sternly.
His remarks are believed to be in reference to recent incidents, including a North Korean boat drifting undetected in South Korean waters.
Here he is speaking earlier today at a Blue House luncheon with elders from the military reserves.
"Due to recent incidents, the people are worried about our military's discipline and readiness. As the commander-in-chief, I feel responsible, and I assure you that we are taking stern measures led by the defense minister and the Joint Chiefs of Staff."
The president also stressed that the South Korea-U.S. alliance is vital to peace in the region.
He added the alliance will be stronger the better South Korea can defend itself, and in that regard the government is pushing for the early transfer of wartime operational control from the U.S.
Moon also pledged to acquire cutting-edge surveillance and long-distance strike capabilities.
Also highlighting last month's meeting between Kim Jong-un and President Trump at the DMZ, President Moon vowed to take a leading role in the three countries' efforts to establish peace on the Peninsula.