A key part of Trump's appeal was his promise to end 'endless wars' and prioritize domestic issues. Engaging in a new Middle East conflict, even if popular with his base initially, directly contradicts this foundational message and risks alienating voters who supported him precisely for his non-interventionist stance.

The American P&I Club was established in 1917 because the UK's "Trading with the Enemy Act" during WWI barred American ship owners, who were not yet in the war, from using London-based clubs. This geopolitical event forced the creation of a domestic maritime insurance mutual.

The late 19th-century movement for international arbitration was heavily associated with female activists. Opponents successfully cast diplomacy as a "feminized" weakness, arguing that war was necessary to reassert masculine virtues and authority in American politics and counter women's growing influence.

Italian leaders openly framed their switch of alliances as a "sacred egoism" – a divinely appointed mission to enlarge the fatherland. This concept sacralized raw national self-interest, providing a moral justification for betraying former allies and pursuing a war of conquest.

Even when facing severe international backlash, a US president's most controversial foreign policy actions are ultimately limited by unpopularity within their own country and party, which creates significant political and practical consequences that outweigh pressure from allies.

Citing the historical example of the Lusitania, which was loaded with munitions and sent into U-boat territory without an escort, the host argues that governments orchestrate or permit attacks on their own interests. This creates a powerful casus belli, manipulating public opinion and forcing allies' hands.

Lacking a parliamentary majority for war, Prime Minister Salandra executed a masterful political maneuver by resigning. This dared the king to appoint an anti-war successor amidst orchestrated street protests. Fearing civil unrest, the king was forced to reappoint Salandra, effectively greenlighting Italy's entry into the war.

Italy joined WWI after being promised vast territories, but received only a fraction of them after immense sacrifice. This widespread sense of betrayal and resentment over a "mutilated victory" created the perfect political environment for nationalists like Benito Mussolini to rise to power in the 1920s.

As a newly unified country, Italy lacked a strong national identity. Leaders cultivated a sense of grievance and "unfinished business" over its border with Austria, a concept known as irredentism. This became a powerful political tool to weld the new nation together against a common enemy.