South Korea urged North Korea to have a more “flexible attitude” just hours after Kim Jong Un’s sister slammed Seoul and Washington for their joint military exercises on Tuesday.

Boo Seung-chan, a spokesperson for the South Korean Ministry of National Defense, said that ongoing joint military exercises are “defensive in nature” and that North Korea should “show a flexible attitude” by responding to South Korean diplomatic efforts to “establish a lasting and stable peace.” 

Boo’s remarks were in response to North Korean leader Kim Jong Un’s sister, Kim Yo Jong, who condemned military drills earlier that day by callingthem