There is a huge amount of stress in the east right now as North Korea has been testing and developing new missiles that can reach U.S. territory. The U.S. and South Korea have been threatened with war if they tried to interfere with their tests.

According to Reuters, "South Korea is acquiring 40 U.S.-made missiles for an Aegis destroyer this month to boost its defenses amid reports North Korea may soon test-fire missiles, Yonhap news agency on Sunday quoted a military source as saying. North Korea, which rattled regional security with a May 25 nuclear test, is preparing to test a long-range missile that could hit U.S. territory and mid-range missiles that could hit all of South Korea, a South Korean presidential Blue House official said last week. The surface-to-air missiles for the Aegis destroyer, designed to track and shoot down objects including missiles, can hit targets up to 160 km away, Yonhap quoted the source as saying."