Rise and Failure of the League of Nations

An organisation opened for business with no army, no revenue of its own and no power to bind a member that objected. Its founders knew this. They expected the great powers to supply the enforcement, which meant the League could only act where those powers already agreed, and there it was hardly needed.

Two small states with no capacity to fight a long war accepted arbitration, and the settlement held. That is the League's genuine achievement and also its limit: it resolved a dispute where neither party had the means or the will to impose an outcome, which describes a narrow class of conflicts.

Mussolini bombarded and occupied a Greek island, and the matter was settled by the Conference of Ambassadors, with Greece paying and Italy leaving. A great power discovered it could route around Geneva when Geneva was inconvenient, and nothing followed. The lesson was learned by everyone watching.

Stresemann joined the League for concrete reasons: to end occupation, revise reparations and recover freedom of action in the east. Cooperation was a strategy for a weak state, not a conversion. He said so privately, and there is no reason to doubt his calculation was the whole of it.

Japan took a territory rich in coal, iron and soybeans, and no state with the means to stop it had an interest sufficient to try. Britain was preoccupied, America was outside the League, and China could not resist. The seizure succeeded because the arithmetic of interests permitted it.

Hitler left the Disarmament Conference and the League on the same day, having first demanded equality of armaments knowing it would be refused. The refusal supplied the pretext. Withdrawing removed the last procedural obstacle to rearmament, which was the point of the exercise from the outset.

Britain and France needed Italy against Germany and would not risk that alignment for Ethiopia, so sanctions excluded oil and the Suez Canal stayed open. The Hoare-Laval plan, leaked and abandoned, showed what they had actually intended. Priorities among threats determined the response, as they always do.

The Assembly met to wind up an organisation that had been irrelevant for seven years, transfer its buildings and close the books. Institutions that cannot enforce their decisions do not usually collapse dramatically; they are simply bypassed until someone performs the formality of ending them.

The Covenant took effect with the United States absent, Germany excluded and Russia outside, so the institution began missing three of the largest units in the system. Whatever machinery Geneva possessed, it could not manage a balance from which the heaviest weights had been removed.

Sweden and Finland were both weak, both adjacent to a Soviet Russia they feared more than each other, and both had reason to settle quickly. Structural pressure from a larger neighbour did much of the work that the Council received credit for. Context made the arbitration acceptable.

Britain considered naval action and did not take it, partly because the Mediterranean fleet's readiness was doubtful and partly because Italy was wanted elsewhere. Enforcement against a great power requires willingness to risk war with it, and that calculation is made outside the institution, not within it.

Locarno guaranteed Germany's western frontier and pointedly said nothing about its eastern one, which told Poland and Czechoslovakia exactly where they stood. The settlement stabilised one front by leaving the other open, and the direction of future German revision was thereby indicated to everyone.

Enforcing collective security in Manchuria required naval power in the western Pacific that only Britain and the United States possessed and neither would commit. Distance and the distribution of usable force decided the outcome, and the Council's deliberations never touched either variable.

The Disarmament Conference had been trying for eighteen months to reconcile French demands for security with German demands for parity, which are not reconcilable propositions between neighbours. Arms control fails where the underlying distribution is what the parties actually disagree about.

The crisis produced the worst available outcome: Italy was antagonised without being stopped, and moved toward Germany within two years. Half-measures against a revisionist power neither deter nor conciliate. The alignment the sanctions were designed to protect was destroyed by the sanctions themselves.

Its successor was designed around the failure: a Security Council of the actual great powers, each with a veto, on the theory that an organisation cannot act against a major state and should not pretend otherwise. The United Nations encoded the distribution of power rather than ignoring it.

The design assumed that publicity would restrain aggression: disputes aired in an assembly, treaties registered and published, a delay before any resort to war. It was a bet that opinion could substitute for force, made by men who had just watched opinion fail to prevent a world war.

The islanders were Swedish-speaking and wanted union with Sweden; the Council gave sovereignty to Finland and guaranteed language, land rights and self-government instead. Separating sovereignty from cultural autonomy was an inventive compromise, and it has kept the peace for a century.

Greece had submitted the dispute to the League as the Covenant required, and was then required to pay compensation by a body it had not chosen. A member that follows the rules and is penalised anyway teaches every other member something about the value of compliance.

Weimar's foreign policy of fulfilment was contested at home from the first day, and Stresemann's Nobel Prize did not protect him from nationalist attack. Democracies pursuing reconciliation are constrained by domestic opponents who profit from grievance, which limits how much any government can concede.

The Lytton Commission produced a careful, largely accurate report concluding that Japan's action was not self-defence, and Japan left the League rather than accept it. Investigation and publicity worked exactly as designed and changed nothing, because shame only binds states that want to remain in good standing.

Germany's exit was confirmed by a plebiscite in which ninety-five per cent approved, held under conditions that made the number meaningless and the demonstration effective. Authoritarian regimes use the forms of democratic authorisation precisely because those forms carry weight with foreign observers.

British opinion, tested by the Peace Ballot, strongly supported collective security, and the government pursued sanctions to satisfy it while sabotaging their content. Democratic pressure produced the appearance of enforcement, which is what a government does when the public wants an outcome it will not pay for.

The technical bodies survived and prospered: the labour organisation, the health work, the refugee machinery, the mandates system reborn as trusteeship. The League's functional achievements outlived its political ones, which is the usual pattern for international organisations that fail at their headline purpose.

Beneath the political organs sat a secretariat, a permanent court, a labour organisation and technical committees on health, transit and finance. These were the parts that worked, because they solved coordination problems where interests converged rather than trying to compel where they did not.

The settlement worked because it was specific: demilitarisation, a defined autonomy, guaranteed schooling in Swedish, and provisions for monitoring. Vague awards invite renewed argument. A detailed instrument that answers the questions likely to arise is what makes an arbitration durable.

The Covenant did not say clearly whether the Council or the Conference of Ambassadors had jurisdiction, and Italy exploited the ambiguity to move the case somewhere more favourable. Forum shopping is available wherever competences overlap, and it hollows out the institution that loses the case.

Germany received a permanent Council seat, which was the price of entry and the substance of it: a veto and a voice. Institutional status is what makes membership worth having to a state recovering from defeat, and denying it in 1919 had been a substantial error.

The League's response was to withhold recognition of Manchukuo, the Stimson doctrine in institutional form. Non-recognition is a cheap sanction with slow effects: it denies a conquest legal standing without reversing it, and its value depends entirely on how long the institution outlives the conquest.

The Covenant permitted withdrawal on two years' notice, and Germany used the provision. Exit clauses make institutions easier to join and easier to abandon. Any organisation that lets members leave when constraint becomes real has limited purchase on the cases where constraint is most needed.

Sanctions that exclude the commodity the target most needs are not sanctions; they are a signal. Oil was left out because closing it risked war, and everyone including Mussolini could read the omission. A regime that publishes its own limits has told the target exactly how far it may go.

Assets, archives, buildings and staff were transferred deliberately rather than dispersed, and the Palais des Nations became the United Nations' European seat. Institutional continuity is a real asset: the successor began with trained people and working procedures rather than from nothing.

For the first time the society of states acquired a permanent address. Ambassadors had existed for centuries and congresses met when crisis demanded; now there was a standing assembly with a secretariat and a seat. That institutional innovation survived the League's failure and shaped everything after it.

Both parties accepted that a third body could determine sovereignty over territory, which is a considerable concession by any state. The Council's authority here rested entirely on the willingness to be bound, and that willingness is precisely what a society of states consists of.

Italy justified its action as a response to an outrage against its officers, invoking honour and reprisal, which were still recognised categories. The society of states had not yet fully replaced the older vocabulary of satisfaction with the newer one of collective security, and Mussolini used the gap.

Readmitting the defeated power to full membership seven years after the war was the settlement's best moment, and it is what Vienna had done in four. International society works by reintegration, and the years between Locarno and 1930 are the interwar period's only sustained attempt at it.

One member invaded another and the society of states declined to act, which established a precedent read carefully in Rome and Berlin. Rules are constituted by their enforcement, and each unpunished breach revises what the rule actually is, whatever the text continues to say.

Germany had been readmitted to international society in 1926 and repudiated the membership seven years later. That reversal showed that reintegration is not irreversible, and that a state's acceptance of the rules depends on the regime holding power rather than on the state itself.

Ethiopia was a member state, admitted in 1923 partly at Italian urging, and it was invaded and annexed by another member while the institution watched. Haile Selassie's address to the Assembly is the clearest statement anyone has made about what collective security owed and did not deliver.

The experiment established that a permanent general organisation of states was possible, and its failure taught what such a body must contain to matter. Every later institution is built on both halves of that lesson, and the drafters at San Francisco said so explicitly.

Geneva was chosen deliberately: neutral, small, associated with humanitarian work rather than with any great power. The setting was part of the argument that international politics could become something other than a contest, and the choice reveals what the founders wanted the organisation to mean.

The award treated nationality as one interest among several rather than as the decisive claim, at a moment when self-determination was the dominant language of European politics. Åland shows that a norm can be applied flexibly when the parties are willing to have it applied that way.

Three years after its founding the League was shown to be optional for a determined great power, and that demonstration did lasting damage to what the institution was understood to be. Reputations of new organisations are set early, by the first case they visibly fail to handle.

The spirit of Locarno was a real phenomenon and a fragile one: a shared expectation among European statesmen that disputes would be handled by negotiation. It was built on personal relationships and a temporary prosperity, and when both failed the expectation collapsed faster than any treaty.

Japan had been a model member, a permanent Council seat holder and a signatory of every disarmament agreement, and its departure signalled that the whole framework was optional. When a state that has internalised an order publicly abandons it, the effect on others is disproportionate.

The new government presented withdrawal as restoring national honour after fourteen years of humiliation, and the framing was widely accepted at home. Foreign policy conducted as the redress of a national wound is difficult to bargain with, because concessions are read as further insults.

The invasion was justified in Rome as a civilising mission, the last European empire built on the vocabulary of the nineteenth century in the middle of the twentieth. That the language still worked domestically, while appalling opinion abroad, marks how far the norms had shifted without shifting everywhere.

The League's reputation as a byword for futility was fixed by the 1930s and has proved durable, obscuring the Åland settlement, the refugee passports and the health work. What an institution is remembered for is decided by its worst cases, and this shapes what successors are permitted to attempt.