Williamson supports principled diplomacy, including citizen diplomacy and family reunification. She has said she would declare a formal end to the Korean War, replace the Armistice Agreement with a peace regime and back South Korean efforts to improve inter-Korean relations through confidence-building and tension reduction measures. Williamson also supports the creation of inter-Korean economic, cultural and civic projects, humanitarian relief efforts, and the inclusion of women, youth, and civil society in negotiations.