U.S. Secretary of State John Kerry touches down in South Korea. He's here to boost bilateral ties with the country.<br/> <br />He was quick to exchange pleasantries with South Korean President Park Geun-hye exchange, before moving on to tougher issues.<br/> <br />Kerry says planned military exercises with South Korea later this month are nothing new ... and shouldn't be linked to other issues.<br/> <br />Meanwhile, North Korea demands the drills be postponed as to not overlap with the planned reunion of families separated since the Korean War.<br/> <br />(SOUNDBITE) (English) U.S. SECRETARY OF STATE JOHN KERRY SAYING:<br/> <br />"The United States does not believe that it is appropriate to link humanitarian issues such as reunification with any other issue."<br/> <br />Also on the agenda: pushing other countries in the region to re-engage North Korea in nuclear talks.<br/> <br />(SOUNDBITE) (English) U.S. SECRETARY OF STATE JOHN KERRY SAYING:<br/> <br />"Our belief is that China can do more now to urge North Korea to begin t
