CLA News / Diplomacy, the Rule of Law, and the Architecture of Peace: The International Diplomatic Union
In an era shaped by geopolitical multipolarity, humanitarian crisis, and rapid institutional change, the relationship between diplomacy and the rule of law has rarely mattered more. Lasting peace is rarely secured through power alone; it is built through dialogue, durable institutions, and a shared commitment to justice. It is this conviction that underpins the work of the International Diplomatic Union (IDU), a Brussels-headquartered non-profit association established in 2011 to advance professional diplomatic standards, foster intercultural dialogue, and promote peace, human rights, and global cooperation.
IDU operates through three interlocking pillars — membership, diplomatic recognition, and professional training — bringing together diplomats, legal professionals, policymakers, academics, and emerging leaders drawn from more than 40 countries. Its guiding philosophy is set out by Dr. Faisal Al-Mutairi, President of the International Diplomatic Union:
“Our vision is a world where principled, informed, and globally connected leaders shape international affairs with wisdom, integrity, and respect for international law. We believe that every nation, regardless of its size or influence, should have a meaningful voice in addressing the challenges and opportunities that define our shared future.”
For Dr. Al-Mutairi, the legal profession occupies a particular place within that vision. “The legal profession has a unique responsibility in safeguarding justice, strengthening institutions, and reinforcing confidence in the international legal order,” he observes. “We recognise the invaluable contribution of lawyers, judges, academics, and legal organisations throughout the Commonwealth and across the international community in promoting the rule of law, accountability, and peaceful cooperation.” This conviction — that diplomacy and law are, in practice, inseparable — runs through IDU’s flagship initiative: the IDU Diplomatic Excellence & Statecraft Programme.
Launched this year, the Programme is a three-tier, progressive training pathway for diplomats, government officials, and international affairs professionals, taking participants from foundational diplomatic literacy through operational skills to executive-level statecraft. It opens with Level 1: Foundations of Diplomacy, a five-day residential programme running from 12 to 16 October 2026 across Cambridge and London. Capped at 30 participants, the programme combines masterclasses in international law and diplomatic protocol with tabletop simulations, drafting labs, and field visits to embassies and the Commonwealth Secretariat, culminating in an IDU Professional Certificate. And IDU Membership. Applications for the October 2026 intake are now open.
Translating that vision into a working programme has been the task of Sadham Dhikran Zarjahan, IDU’s Chief Operating Officer, who leads the Programme’s implementation. “Vision, however compelling, only becomes meaningful when it is translated into structures, partnerships, and opportunities that people can engage with directly,” he says. “Diplomacy and international law are inseparable in practice — the Vienna Conventions, the UN Charter, and the wider architecture of public international law provide the framework within which diplomatic conduct occurs. Lawyers, legal academics, and Bar Association members across the Commonwealth are among the professionals for whom this Programme, and IDU membership more broadly, offers genuine value: a structured means of deepening diplomatic literacy and engaging directly with practising diplomats and international institutions.”
The Programme is aimed at a deliberately broad cross-section of professionals: serving diplomats and foreign service officers, government policy advisors, staff of UN agencies and NGOs, academics and researchers in international relations and law, and private-sector leaders working across borders. Legal professionals sit naturally within this mix. As Zarjahan puts it, the Programme’s Protocol & Drafting Labs and its grounding in the Vienna Conventions and the UN Charter give lawyers a direct route into diplomatic practice, while its field visits to embassies and to the Commonwealth Secretariat at Marlborough House offer first-hand exposure to institutions many legal practitioners engage with only on paper.
Successful participants may go on to apply for IDU membership, joining a global network with voting rights, access to further diplomatic training and accreditation, and eligibility for the Union’s diplomatic medals. IDU is also expanding its footprint in the United Kingdom, partnering with universities to anchor the Programme’s academic delivery and building toward a wider calendar of dialogues, an Ambassadors’ Dinner, and future programme tiers. None of this, IDU’s leadership stresses, is possible in isolation. “It depends on partnerships,” Zarjahan notes, “with universities, with professional bodies, and with organisations such as the Commonwealth Lawyers Association, that share our conviction that law and diplomacy, practised together, are among the most durable instruments of peace.”
“Together, through diplomacy, law, and international cooperation, we can help build a future where understanding prevails over conflict, dialogue replaces division, and shared responsibility becomes the foundation of lasting global progress,” Dr. Al-Mutairi concludes. Further information on the IDU Diplomatic Excellence & Statecraft Programme, including registration for the October 2026 intake, is available at www.un-idu.org.
Applications for the October 2026 intake are now open at https://s.un-idu.org/product/level-1
By: Salma Yusuf
LL.B (Hons) (University of London),
LL.M (Queen Mary University of London),
Attorney-at-Law of the Supreme Court of Sri Lanka;
International Consultant, Democracy and Governance, Rule of Law and Justice, Human Rights, Transitional Justice, Conflict Resolution & Peacebuilding, Diversity Equity and Inclusion
