For most IB students, the strongest subject combination for international relations is Global Politics HL, History HL, and Language A HL, supported by a second language, mathematics, and a science at SL. However, there is no universal required combination. Economics, Geography, Philosophy, and a language at HL can all be excellent alternatives, depending on your strengths, school provision, and intended university courses.
The central principle is to take at least one rigorous essay-based subject at HL, demonstrate strong analytical writing, and choose subjects in which you can earn high grades. Universities usually care more about your HL results and overall Diploma score than about finding one supposedly perfect combination.
The best IB subjects for international relations
International relations is interdisciplinary. University courses commonly combine political theory, diplomatic history, international law, economics, security, development, research methods, and regional studies. A good IB combination should therefore build argumentation, evidence evaluation, contextual knowledge, and communication skills.
Global Politics
Global Politics is the most directly relevant IB subject because it examines power, political actors, conflict, rights, justice, development, and sustainability. The current course, first assessed in May 2026, includes a core focused on understanding power and global politics alongside thematic studies in rights and justice, development and sustainability, and peace and conflict.
Taking Global Politics HL signals clear academic interest, but it is not normally an admission requirement. Universities understand that many IB schools do not offer it. Students can review the course through RevisionDojo’s IB Global Politics resources and syllabus-aligned Global Politics notes.
History
History HL is often the strongest alternative or companion to Global Politics. It trains you to interpret sources, compare explanations, construct sustained arguments, and understand how states, conflicts, institutions, and ideologies developed over time.
These skills transfer directly to international relations essays. History is especially useful for degrees with diplomatic history, foreign policy, war studies, or regional specialisms, although universities rarely make it compulsory. RevisionDojo’s IB History resources can help students judge the course’s content and assessment demands.
