Her arrival follows an announcement from North Korea which threatened a conflict with the South, if they proceed the plan to resume cross-border propaganda broadcasts. South has decided to resume the broadcasts after a gap of six years, as a protest against the Cheonan sinking.
Hillary Clinton will have talks with President Lee Myung Bak and the Foreign Minister Yu Myung-Hwan before holding the press conference and departing to US. US administration had previously offered all the supports for South Korea, for any stand it takes.
She arrived from China after the talks with the Chinese President to get tougher with its ally with North Korea over the sinking of a South Korean warship, Cheonan.
China has not blamed the North for the sinking but asked to be cautious by all sides.