South Korean President Yoon Suk-yeol stressed the need to protect peace through military strength on Saturday, marking the 72nd anniversary of North Korea’s invasion of the South that started the Korean War.

The president’s statement came after North Korean leader Kim Jong Un guided a multi-day military meeting last week that adopted a “major military action plan” for front-line units on the inter-Korean border, appearing to escalate its military posture toward the South.