The United States and South Korea on Sunday began their annual joint military exercises which had been postponed until after the Winter Olympics and Paralympics, South Korean Defense Ministry sources said.The exercises, which both countries stress are defense in nature, come as Seoul and Washington prepare for separate summits with North Korean leader Kim Jong Un amid a diplomatic thaw on the Korean peninsula.Both the South Korean Defense Ministry and the U.S. Department of Defense said last month that the exercises would be roughly the size of those in previous years.However, local media h…READ FULL ARTICLE