Read this sentence from "President Richard Nixon: Re-election, Second Term, and Watergate"

"Such controversies all but overshadowed Nixon's other initiatives in his second term, such as the signing of the Paris peace accords ending American involvement in the Vietnam War in January 1973; two summit meetings with Brezhnev, in June 1973 in Washington and in June and July 1974 in Moscow; and the administration's efforts to secure a general peace in the Middle East following the Yom Kippur War of 1973."

Knowing the words initiatives and actions are synonyms, what is the definition of initiatives?

crusades

desires

motivations

measures