Seoul's National Intelligence Service (NIS) said North Korea has not sent weapons or supplies so far to Iran after the conflict started on February 28, and did not issue public condolences upon the death of Supreme Leader Ayatollah Ali Khamenei, who was killed in air strikes, according to lawmaker Park Sun-won, who attended a closed-door briefing held by the NIS. Pyongyang also sent no congratulatory message when Khamenei's son, Mojtaba Khamenei, was selected as the new supreme leader, Park said, citing the NIS. North Korea is facing economic strain related to the Middle East crisis, with disruptions to the procurement of industrial supplies, rising prices, and a surging exchange rate, the NIS told lawmakers. North Korea is also trying to secure Russian oil supplies, the NIS added.