Specifically, North Korea could hold at risk bases required for warfighting and force flow; blackmail regional allies into denying the use of their facilities in a crisis or war; hold CONUS directly at risk; and promise a massive retaliation against U.S. allies in the event that U.S. or South Korean forces violate North Korean territory
전체 문장이고
"North Korea could hold at risk bases required for warfighting and force flow"
이게 무슨 뜻인질 몰겠음
at risk를 at-risk 로 생각하면 되고, 여기서 bases는 basis의 복수형. Specifically로 시작해서 앞내용이 뭔지 알아야 좀더 자세히 알듯