Which statement best describes the policy of "brinkmanship" supported by john foster dulles (secretary of state to president eisenhower)? a) diplomacy and disarmament are encouraged to avoid nuclear war. b) gaining alliances and formal agreements are encouraged to avoid war. c) threats and aggressive tactics are used to cause the opposing side to back down. d) the goal is to get treaties signed where both parties agree the use of nuclear weapons is not an option.