Final answer:
The US and USSR made progress towards Nixon's goal of reducing tensions through events like the Moscow Summit and the signing of the Helsinki Accords, but they were unable to fully live up to his expectations.
Step-by-step explanation:
President Nixon's goal was to reduce tensions between the United States and the Soviet Union, known as détente. While both countries made some progress towards this goal, they were unable to fully live up to Nixon's expectations.
One piece of evidence from the video transcript is the Moscow Summit meeting between Nixon and Brezhnev in 1972, where they discussed détente and signed the Strategic Arms Limitation Treaty (SALT).
Another evidence is the signing of the Helsinki Accords in 1975, which demonstrated the willingness of the United States, the Soviet Union, and other nations to respect existing national borders and promote peaceful coexistence.
However, tensions still persisted between the two superpowers, and détente eventually declined after Nixon's presidency.