North Korea is getting increasingly agitated at the United States and South Korea’s plans to conduct a naval exercise in the Sea of Japan later this week. The military maneuvers are expected to involve 20 ships, 20 aircraft and 8,000 personnel over 4 days. “The decision to hold military drills is a major danger for the security of the region,” said a North Korean official, Ri Tong-il, reported the BBC. The North Korean comments came just a day after U.S. Secretary of State Hillary Clinton announced new sanctions on the country, following an investigation that linked the sinking of the Cheonan ship with Pyongyang. North Korea disputes the U.S. sanctions and says that they violate a UN statement released after the incident in March. North Korea and China object to the foreign military drills.