<P>Jimmy Carter entered the White House with a desire for a collegial staff that would aid his foreign-policy decision making. He wound up with a "team of rivals" who contended for influence and who fought over his every move regarding relations with the USSR, the Peoples'' Republic of China, arms control, and other crucial foreign-policy issues.In two areas¿the Camp David Accords and the return of the Canal to Panama¿Carter''s successes were attributable to his particular political skills and the assistance of Secretary of State Cyrus Vance and other professional diplomats. The ultimate victor in the other battles was Carter''s national security advisor, Zbigniew Brzezinski, a motivated tactician. Carter, the outsider who had sought to change the political culture of the executive office, found himself dependent on the very insiders of the political and diplomatic establishment against whom he had campaigned.Based on recently declassified documents in the Carter Library, materials not