What were Nixon's greatest triumphs in foreign relations?
A) Opening diplomatic relations with China
B) Negotiating the Strategic Arms Limitation Treaty (SALT I) with the Soviet Union
C) Ending the Vietnam War through the Paris Peace Accords
D) Establishing the Environmental Protection Agency (EPA) and signing the Clean Air Act
E) Implementing the Nixon Doctrine, which shifted the burden of defense to regional allies
F) None of the above
