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The Collapse of Collective Security and the League of Nations

Imagine an international police force that refuses to arrest criminals. That is what the League of Nations became by the 1930s.
The League relied on to stop aggressors, but its failure during the Manchurian Crisis (1931–1933) and Abyssinian Crisis (1935–1936) proved it lacked moral credibility and military enforcement power.
In 1935, Britain, France, and Italy formed the to uphold the and contain German rearmament. However, this collapsed when Britain unilaterally signed the Anglo-German Naval Agreement and the League failed over Abyssinia, pushing Mussolini into the with Hitler.

Hitler’s Foreign Policy and Early Aggression

Hitler's popularity in Germany was deeply rooted in his promise to destroy the , which the public despised as an illegitimate .
His primary foreign policy aims were establishing (a Greater Germany) and securing (living space) in Eastern Europe.
Emboldened by the League's weakness, Hitler reintroduced military in 1935 and announced the creation of the . In a direct causal link, the League's failure in Abyssinia encouraged Hitler to successfully remilitarise the Rhineland in 1936 without facing any opposition.

The Policy of Appeasement and the Munich Crisis (1938)

How do you stop a heavily armed dictator when your own country is economically broken and terrified of another world war? This was the dilemma facing British Prime Minister .
Chamberlain adopted , a policy of making concessions to Nazi Germany to avoid conflict. He was constrained by the Great Depression (1929), strong pacifist public opinion, and a severe military spending gap.
During the 1938 , Hitler demanded the , a border region containing three million ethnic Germans. At the (29–30 September 1938), Britain and France granted Hitler this territory, deliberately excluding Czechoslovakia and the USSR from the negotiations.

Evaluating Appeasement: Was it a Mistake?

Evaluating requires presenting arguments both for and against the policy before reaching a balanced judgement.
Arguments FOR: bought Britain a vital year to rearm. Between 1935 and 1939, British military aircraft production surged from 893 to 7,940, allowing the RAF to mass-produce Spitfires and finish its radar network.
Arguments AGAINST: The empowered Hitler strategically. By occupying the , Germany gained the , securing enough weapons to equip 20 German divisions, while Britain simultaneously abandoned a Czechoslovakian ally with a 34-division army.
Balanced Judgement: While successfully delayed war and secured the moral high ground for Britain, it ultimately failed as a strategic deterrent. Germany's military grew much faster, spending approximately 40 billion Reichsmarks more than Britain during the 1930s, and Hitler finally ended the policy by invading the rest of Czechoslovakia on 15 March 1939, turning it into a .

The Nazi-Soviet Pact and the Outbreak of War

Why would a fascist and a communist, who ideologically hated each other, sign a peace treaty? The answer lies in mutual strategic desperation.
Britain and France had attempted a military alliance with Stalin, but sent low-level diplomats on a slow merchant ship, the , making Stalin believe the West was not serious and just wanted the USSR to absorb Hitler's first strike.
Alienated by the West, Stalin signed a with Hitler on 23 August 1939, widely known as the . It contained a to violently divide Poland between them.
For Hitler, this removed the strategic nightmare of a , giving him the green light to invade Poland on 1 September 1939, which finally caused Britain and France to declare war on 3 September.

Students often describe Appeasement simply as 'cowardice'. You will earn higher marks by explaining the severe economic (Great Depression) and military constraints that forced Chamberlain's hand.

When tackling 'Evaluate' questions, you must provide a balanced judgement: use quantitative data (like the surge from 893 to 7,940 aircraft) to defend Appeasement, and strategic losses (like the Skoda armament works) to criticize it.

High-level OCR responses must establish synoptic links; explicitly connect the outbreak of war in 1939 back to the long-term resentment created by the 1919 Treaty of Versailles.

Use exact OCR terminology in your essays; describe the breakdown of League collective security in the 1930s as a shift towards 'The Changing International Order'.

The foundational principle of the League of Nations where member states would act together to stop an aggressor through moral pressure, economic sanctions, or military force.

An agreement formed in April 1935 by Britain, France, and Italy to uphold the Locarno Treaties and resist any further German attempts to change the Treaty of Versailles.

A series of agreements made in 1925 where Germany accepted its western borders, which the Stresa Front later attempted to protect.

The coalition formed between Italy and Germany in 1936 following the collapse of Mussolini's relations with Britain and France.

The 1919 peace settlement that officially ended World War I and imposed heavy penalties on Germany.

A forced peace; the deeply resentful German term used for the Treaty of Versailles.

The foreign policy goal of uniting all German-speaking people into one Greater German empire.

Translating to 'living space', this was the Nazi ideological goal of expanding German territory into Eastern Europe to secure land and resources.

Compulsory enlistment for state service, typically into the armed forces, which Hitler reintroduced in 1935.

The aerial warfare branch of the German military forces, publicly announced by Hitler in 1935.

The British Prime Minister from 1937 to 1940 who heavily pursued the policy of Appeasement toward Nazi Germany.

The diplomatic policy of making concessions to a revisionist or dictatorial power in order to avoid a full-scale conflict.

The 1938 diplomatic emergency triggered by Hitler's demand to annex the border regions of western Czechoslovakia.

The border regions of western Czechoslovakia inhabited by approximately 3 million ethnic Germans.

The September 1938 pact where Britain, France, Italy, and Germany agreed to the immediate German occupation of the Sudetenland.

A massive Czechoslovakian factory complex that, after the Munich Agreement, provided Hitler with weapons sufficient to equip 20 German divisions.

A state that is controlled and protected by another, which became the status of Bohemia and Moravia after the March 1939 German invasion.

The slow merchant ship used by the 1939 British/French military mission to Moscow, which signaled a lack of diplomatic urgency to Stalin.

A formal agreement between two or more states promising not to resort to military action against each other.

The August 1939 non-aggression agreement between Germany and the USSR that shocked the world and directly paved the way for World War II.

A hidden addition to a treaty containing highly sensitive terms; in 1939, this was the private agreement between Hitler and Stalin to divide Poland.

A conflict in which a country must fight on two geographically separate borders simultaneously, which Hitler avoided by signing the Nazi-Soviet Pact.