South Korea conducted drills simulating bomb and poisonous gas attacks at a subway station in Seoul on August 22. <br /><br />The annual contingency drills are known as the Ulchi Exercises, but because of mounting tensions with North Korea, this year’s drills were noticeably more extensive. <br /><br />About 4,000 government bodies, as well as 480,000 state employees, are expected to take part.
