Taken from CNBC’s Daily Open, our international markets newsletter — Subscribe today South Korea's Kospi recorded its worst day on record , plunging 12% on Wednesday. Asian markets saw losses across the board, while U.S. markets also fell. The S&P 500 slipped about 0.94%, while the Dow lost 0.83%. At one point, the Dow fell more than 1,200 points. The Nasdaq Composite closed down 1.02%. Gulf nations said their weapons stockpiles are sufficient as Iran continued drone and missile strikes on the