While Pope Leo XIV is the current Pope, there is no record of a Pope Leo XIV meeting with US Vice President JD Vance and Secretary of State Marco Rubio. However, I can provide information about how the Catholic Church and the Holy See engage with political leaders and international diplomacy.

Here's a breakdown:

The Church's Role in Promoting Peace and Dialogue

• Encouraging Dialogue: The Holy See actively encourages political leaders to engage in dialogue and negotiation to foster peace among all people 1.
• Integral to Spiritual Mission: The Catholic Church views promoting peace and justice as an integral part of its spiritual mission, rooted in the commandment of brotherly love 1.
• Serving the Common Good: The Church aims to serve the common good in the cause of peace, while respecting the distinct roles of civil authorities 2 3.
• Promoting Human Dignity: The Church participates in educating consciences on essential principles and values of social life, such as respect for human dignity, solidarity, and brotherhood 2 3.
• Moral Obligations: The Holy See seeks to foster awareness of the moral and ethical obligations of political, social, and economic power within the international community 4.

Holy See's Diplomatic Efforts

• Multilateral Diplomacy: The Holy See uses multilateral diplomacy to pursue the universal common good, aiming to build a world based on truth and justice 5.
• Witness to Principles and Values: The Holy See engages in international diplomacy as a witness to the principles and values that underlie the common good of the human family 6.
• Not for Political Purposes: The Church's presence in international forums is not for political purposes but to promote human dignity, hope, and the conviction that the destiny of nations lies in Providence 6.
• Listening and Cooperation: The Pope views contacts with ambassadors and government leaders as opportunities for attentive listening and suggesting sincere cooperation on issues affecting humanity 7.
• Tenacity, Modesty, and Patience: The Church recognizes that diplomatic work requires tenacity, modesty, understanding, and patience, and is committed to continuous dialogue and finding new solutions 7.
• Serving Justice and Peace: The Apostolic See acts in the service of justice, peace, and the international community, without seeking personal advantage or power 8.
• Respect for National Sovereignty: The Holy See respects the sovereign prerogatives of all states and desires to contribute to their welfare 9 10.

The Church and the Situation in Ukraine

• Grave Concern: The Holy See has expressed grave concern over the war in Ukraine, emphasizing the need to silence weapons and start negotiations for a just and lasting peace 11.
• Support for Diplomacy and Peace: The international community must unite in support of diplomacy and peace to resolve disputes through peaceful means 12.
• Humanitarian Initiatives: The Holy See is engaged in humanitarian initiatives aimed at alleviating the suffering of the Ukrainian population 13.
• Call for a Ceasefire: The Holy See has repeatedly called for an immediate ceasefire and a focus on negotiations for peaceful resolution 14.
• Condemnation of War: The Church views war as a grave affront to human dignity and calls on all parties to refrain from hostile actions 15.
• Dialogue and Negotiation: All parties must remain open to dialogue to find solutions that are consensual, just, and stable 16.

Pope Leo XIII and International Relations

• Diplomatic Tact: Pope Leo XIII was known for his fine diplomatic tact, which helped in establishing good relations with almost all powers 17.
• Arbitration: He showed paternal benevolence when arbitrating in controversies involving nations 18.
• Concern for Various Nations: Pope Leo XIII showed concern for the Church in various nations, including Ireland and the United States 17.

In summary, while the specific meeting you mentioned has not occurred, the Catholic Church, through the Holy See, consistently engages in diplomatic efforts to promote peace, justice, and human dignity on the international stage.