Trieste is presented as more than a backdrop: it is a border city where the unresolved claims surrounding Fiume and Dalmatia meet the practical limits of political action. In the narrative, speeches, a confrontation over the Treaty of Rapallo, a suppressed show of support for Fiume, and Amerigo Dùmini’s arrest all make the city a place where national rhetoric is tested against scarcity, state authority, and factional competition.

Borderland and political stakes

The city’s importance rests on its position within the contested Adriatic setting of the postwar settlement. At a meeting in Milan, Benito Mussolini argues that the Treaty of Rapallo is broadly acceptable regarding the borders of Venezia Giulia and Fiume, though not Dalmatia, and urges acceptance in the name of national discipline. Dalmatians present at the meeting reject that reasoning: in their account, the agreement leaves them exposed to Croatian rule. Their protest gives the treaty a human and territorial dimension that Mussolini’s appeal to political calculation cannot erase.

The narrative places Trieste within a wider contest over whether Fiume’s rebellion should be sustained or relinquished. A proclamation against the treaty invokes Italians of Trieste, Istria, and Venezia Giulia, framing the dispute as an impending national sacrifice. Its language divides political actors into opposing figures of victory and betrayal. The city therefore appears both as a named constituency in the appeal and as part of the frontier geography through which the conflict is understood.

The Fiume dispute and the winter meeting

In early December 1920, Trieste hosts a meeting between Mussolini and Alceste De Ambris as pressure on Fiume mounts. The discussion is framed by the predicament of a besieged city short of provisions, as well as reports of Yugoslav troops near the border and the approaching winter shortage of coal. Mussolini responds with detached, brief remarks about these difficulties. The account presents the exchange not as a resolution but as a moment when the practical conditions of the crisis intrude on grand political claims.

The handling of the meeting’s record reinforces its uncertainty. Foscanelli is asked to destroy the minutes, and the pages are torn up and burned. Mussolini and De Ambris agree on this single point, even as their larger positions remain unresolved. In the same episode, the denunciation of the Treaty of Rapallo turns toward Trieste and neighboring Italian-speaking territories, while the meeting itself exposes the distance between declarations of solidarity and the limited willingness to act. The city is thus associated with a conflict whose documentary trace, like its political outcome, is deliberately obscured.

Public support and political calculation

Trieste offers only a brief, limited response when regular troops attack Fiume during the Christmas fighting. The narrative reports an uprising in support of Fiume, but says it is quickly suppressed and that public participation is scant. This contrast matters: appeals to a shared national cause do not produce a mass movement in the city. The episode places the limits of popular solidarity alongside the more dramatic claims made on Fiume’s behalf.

On February 7, Mussolini addresses an audience at the Politeama Rossetti in Trieste. Defending himself against accusations that he has abandoned Fiume, he presents politics as a long-term undertaking requiring a broad assessment of international conditions rather than improvised marches and episodic violence. His argument moves from the immediate Adriatic dispute to the shifting balance between the United States and Japan, the changing importance of the Atlantic and Pacific, and the future influence of Russia and Germany. He warns that Italy must either participate in directing Europe’s future or be reduced to a dependent, degraded role. In this speech, Trieste becomes a platform for converting a regional controversy into a claim about Italy’s place in the world.

A frontier city in a later scandal

In September 1923, Trieste reappears in a very different register through Dùmini’s dealings in surplus arms. He has secured an option on a large consignment of Austro-Hungarian weapons and ammunition, backed by financing connected with the Adriatic Bank of Trieste. Seeking to sell the material abroad, he turns toward Yugoslavia despite the continuing hostility between that country and Italy over Fiume. A fictitious company based in Marseilles is used to evade the prohibition on arming an enemy country.

The scheme draws the attention of Francesco Giunta, a rival profiteer and Fascist leader, who publicly denounces the traffic and informs Mussolini. After being stopped by Yugoslav authorities in Pola, Dùmini is arrested on De Bono’s orders when he arrives in Trieste. He spends the Ferragosto holiday in the Coroneo prison, a former Austrian penitentiary, then is released after two days and moved to the Grand Hotel. His release follows interventions on his behalf, including a public defense of him by Arnaldo Mussolini; meanwhile, the arms affair continues to generate political pressure.

Narrative significance

Across these episodes, Trieste connects territorial disputes to the machinery of political power. It is invoked by those opposing the Rapallo settlement, witnesses a small and quickly suppressed response in support of Fiume, and provides the setting for Mussolini to recast the dispute as a question of national and international strategy. Later, Dùmini’s arrest there exposes how the same frontier tensions can serve private trafficking and intra-party rivalry. The city’s recurring role is therefore one of exposure: in Trieste, political loyalties and public declarations encounter material constraints, state enforcement, and competing interests.