North Korea's military has fired over 100 artillery shells into the sea off the country's east coast in response to the firing of rocket launchers by South Korea in joint drills with the United States, South Korean military sources said Tuesday.North Korea later said its army units on the eastern front fired 82 shells from multiple rocket launchers toward the sea for eight and a half hours as "counteraction and warning military action against the enemy's planned sinister provocation attempt," according to the official Korean Central News Agency.The firing of several dozens of rounds in the …READ FULL ARTICLE