Vatican City – The Vatican has recently drawn international attention by proposing to host peace talks between Ukraine and Russia. Washington, Kyiv, and various European allies have welcomed Pope Leo XIV's offer, once again highlighting the Holy See's long history of mediation diplomacy. For decades, the Holy See has played a crucial role in resolving international disputes, contributing to global peace.

 
Pope Leo XIV Continues the Diplomatic Legacy of His Predecessors

Pope Leo XIV unequivocally expressed his willingness to mediate in the Ukraine war last week during a meeting with representatives from 23 Eastern Christian churches, stating, "The Holy See is prepared to make enemies face each other, eye to eye." Italian Prime Minister Giorgia Meloni conveyed on May 19 that President Donald Trump, Ukrainian President Volodymyr Zelenskyy, and various European allies of Kyiv had welcomed the Pope's mediation offer, describing it as a continuation of the diplomatic legacy of his predecessor, Pope Francis.

Indeed, the Holy See's involvement in conflict resolution dates back over a century. During World War I, Pope Benedict XV repeatedly appealed for peace, though unfortunately without success. However, since then, the Holy See has played a decisive role in mediating several major international disputes, including territorial conflicts between Argentina and Chile, and the thawing of relations between the United States and Cuba.

 
Contributing to Peace Between Argentina and Chile

Early in his pontificate, Pope John Paul II focused on the territorial dispute between Argentina and Chile, which had persisted for over a century. The two nations were in conflict over control of the Beagle Channel at the southern tip of South America. Tensions between the two countries escalated dramatically, particularly in 1982, when Argentina invaded the Falkland Islands, leading to a brief war with the United Kingdom, with Chile's dictator Augusto Pinochet being the sole Latin American leader to side with London.

Pope John Paul II stated in an April 1982 address that he intervened, confident that "fragile relations would not degenerate into a shameful armed conflict, but instead would be resolved forever." Two years later, his mediation bore fruit. In 1984, the two countries signed the 'Treaty of Peace and Friendship' at the Vatican, settling their border through the Beagle Channel and specifying mutual navigation rights. This is considered a historic event that peacefully resolved the relationship between two countries that were on the brink of war.

Later, in 2015, then-Bolivian President Evo Morales proposed Pope Francis as a co-mediator for a territorial dispute between Bolivia and Chile, but Chilean authorities rejected the offer.

 
A Hidden Facilitator in Cuba-U.S. Relations

In March 2013, when then-U.S. President Barack Obama met Pope Francis, Cuba was a major topic of discussion. Obama had just authorized secret meetings aimed at restoring diplomatic ties with the Cuban government.

Following conversations with the Pope, Pope Francis sent separate letters to President Obama and Cuban President Raúl Castro, urging them to resolve "humanitarian concerns of common interest, including the situation of certain detainees," and to open a new chapter in bilateral relations, as the Vatican later explained.

Then, on December 17, 2014, Presidents Obama and Castro officially announced the re-establishment of diplomatic relations between Washington and Havana. The U.S. agreed to ease some long-standing economic embargo measures and remove Cuba from its list of state sponsors of terrorism. American prisoners held in Cuba were also released.

Although the secret talks were held in Canada, U.S. officials credited the Vatican with playing a decisive role. President Obama stated, "I want to thank His Holiness Pope Francis for his moral example, which shows the world how important it is for us not to simply settle for the world as it is, but to insist on the world as it should be." However, this thaw abruptly halted with the inauguration of President Donald Trump in 2017. Trump withdrew most U.S. diplomats from Havana, and in 2021, re-listed Cuba as a state sponsor of terrorism.

 
A Dramatic Gesture for Peace in South Sudan

Pope Francis also made significant personal efforts for peace in South Sudan, a young nation ravaged by civil war. In April 2019, he invited President Salva Kiir and rebel leader Riek Machar to a 24-hour "spiritual retreat" at the Vatican. Towards the end of the meeting, the Pope took an unexpected and powerful action, kneeling before the two men and kissing their feet, imploring them to end the fighting.

While this gesture did not lead to an immediate cessation of violence, President Kiir accepted mediation efforts led by the Community of Sant'Egidio, agreeing to resume dialogue with opposition groups who had not signed the 2018 peace agreement. The Community of Sant'Egidio, a lay Catholic association founded in Rome in 1968, is actively involved in humanitarian aid and peace mediation in conflict zones around the world.

Nevertheless, during his apostolic visit to South Sudan in February 2023, Pope Francis did not hide his frustration with the slow pace of peace progress. He publicly expressed his disappointment with the South Sudanese leaders' peace efforts.

 
Characteristics and Future of Vatican Diplomacy

Thus, the Holy See has maintained a unique diplomatic status on the international stage for centuries. Vatican diplomacy transcends mere political calculations, pursuing universal peace, justice, and respect for human rights based on the Gospel message. Particularly in situations of conflict and tension, it maintains strict neutrality, provides a platform for dialogue, and focuses on helping those suffering through humanitarian aid.

The key institution responsible for Vatican diplomacy is the Secretariat of State. Under the Pope's direction, the Secretariat manages and coordinates the Holy See's foreign policy and international relations, dispatching papal nuncios worldwide to maintain relations with host governments. South Korea and the Holy See have consistently developed their relationship since establishing diplomatic ties at the ministerial level in 1963.

Amidst the unprecedented international crisis of the Ukraine war, Pope Leo XIV's mediation offer once again raises expectations for the Vatican's diplomatic role. Past successful mediation cases prove that the Holy See is not merely a religious institution but an important international actor performing the role of a bridge for peace and reconciliation. Moving forward, the Vatican is expected to continue exerting a meaningful influence on the international community through its persistent efforts for world peace.