Woodrow Wilson’s Fourteen Points (1918) emphasized the idea that peace should be maintained through international cooperation. This led to the proposal of the League of Nations, which was based on the principle of collective security—meaning that aggression against one state would be treated as aggression against all.

The other options are not central to Wilson’s vision:

• Self-help and Security Dilemma are realist concepts (associated with thinkers like Kenneth Waltz)
• Traditional morality was not the core focus of the Fourteen Points

Hence, Collective Security is the correct choice.

Woodrow Wilson's "Fourteen Points" are the foundations for the Idealist approach in International Relations. The points were a list of moral guidelines that Wilson outlined in a speech to Congress in January 1918 to end World War I.

• The "Jungle": Represents the traditional realist view of international relations as an anarchic state of nature where power is the only currency and conflict is inevitable.
• The "Zoo": Represents the creation of a regulated international order through international institutions, collective security, and the rule of law.

Explanation:
Idealism (also known as Liberal Internationalism) became dominant in the period between World War I and World War II (1919–1939). This phase is often called the interwar period.

• Thinkers like Woodrow Wilson strongly promoted ideals such as:
  • Peace through cooperation
  • International law
  • Creation of the League of Nations

The devastation of World War I led scholars to believe that war could be prevented through moral principles and institutions.

However, after the failure of these ideals (especially with the outbreak of World War II), Realism became dominant.

✔️ Hence, the correct answer is Between Two World Wars.

Explanation:
Liberal Idealism in International Relations emphasizes that:

• Peace is achievable
• States can cooperate rather than constantly conflict
• International institutions and laws help maintain security and order

Thinkers like Woodrow Wilson believed that cooperation, diplomacy, and organizations like the League of Nations could prevent war.

• Founder/Donor: The chair was endowed by the Liberal politician and philanthropist David Davies (along with his sisters Gwendoline and Margaret) with a gift of £20,000.
• Purpose: It was established "in memory of the fallen students of our University" and named after President Woodrow Wilson to promote the academic study of international affairs in a "Wilsonian spirit".
• First Incumbent: The classicist Alfred Zimmern was appointed as the inaugural Woodrow Wilson Professor in the spring of 1919.
• Historical Significance: Its creation is often cited as the formal beginning of International Relations as a distinct academic discipline.