Tension between America and North Korea escalated on Saturday when Pak Rim-su, chief delegate of the North Korean army, warned U.S. military commanders that their forces would face “miserable destruction” if they go ahead with a planned military drill in South Korea. Led by the Key Resolve, the computer-run stimulation war drill is held annually. The two-month event, scheduled to commence March 11, is said to be purely for defense purposes. The threatening message from North Korea was delivered by phone to General James Thurman, who is currently the acting commander of the U.S. Forces Korea.