The superpower rivalry of the Cold War led to changes in the institution of protecting power. The United States, which had accepted over 200 mandates as protecting power before 1945, was no longer seen as a disinterested third party and managed to secure only one mandate after 1945. Instead, the United States had to appoint a protecting power to represent its interests over a dozen times since 1945. Switzerland and Sweden both chose to remain non-aligned in the Cold War and refused to join any military alliances, leading to their continued popularity as protecting powers. Since 1945, Switzerland has held as many as 24 simultaneous mandates as protecting power.