North Korea warns of 'terrible response' over drone incursions

• North Korea threatens 'terrible response' if another South Korean drone crosses its borders.
• The warning follows Seoul's investigation into a January incident where Pyongyang claimed to shoot down a surveillance drone.
• Kim Yo Jong, sister of Kim Jong Un, stated that any violation of DPRK sovereignty would provoke a severe reaction.
• South Korean authorities raided intelligence offices and are investigating soldiers and staffer over the drone incident.
• The incident escalates tensions and could undermine efforts to improve relations between Seoul and Pyongyang.