The field of political science and international relations offers a diverse range of scholarly journals that discuss the impact of cultural diversity and identity politics on international relations. These journals provide valuable insights and perspectives on the intricate relationship between cultural diversity, identity politics, and international relations. Here are some recommended journals for PSIR students:

1. International Organization:
- This journal publishes research articles that examine the role of cultural diversity and identity politics in shaping international relations.
- It focuses on various topics such as nationalism, ethnic conflict, multiculturalism, and the impact of cultural diversity on international cooperation and conflict resolution.

2. Foreign Policy Analysis:
- This journal explores the intersection between culture, identity politics, and foreign policy decision-making.
- It covers topics such as the influence of cultural diversity on state behavior, the role of identity politics in international negotiations, and the impact of cultural differences on diplomatic relations.

3. International Studies Quarterly:
- This journal examines the impact of cultural diversity and identity politics on various aspects of international relations.
- It includes articles on topics such as cultural diplomacy, the role of cultural identity in shaping foreign policy, and the influence of cultural diversity on international institutions and regimes.

4. Review of International Studies:
- This journal publishes articles that analyze the relationship between cultural diversity, identity politics, and global governance.
- It explores topics such as the impact of cultural diversity on international security, the role of identity in international organizations, and the influence of cultural factors on global norms and values.

5. Journal of Ethnic and Migration Studies:
- This journal focuses on the intersection of cultural diversity, identity politics, and migration in the context of international relations.
- It covers topics such as diaspora politics, multiculturalism, and the impact of migration on cultural identities and social cohesion in different countries.

These journals provide rigorous academic research, analysis, and interdisciplinary perspectives on the impact of cultural diversity and identity politics on international relations. They offer valuable resources for PSIR students seeking to deepen their understanding of these complex issues. Remember to always refer to reputable academic sources when conducting research for PSIR.