Hi thanks for your message. I'm in my final year studying IR and Arabic and I also focused on the Middle East in my second year and final year modules, taking Introduction to the Middle East and Palestine/Israel. I was also able to learn about conflicts, rights and justice in my IR course and yes politics and IR definitely overlap in some of their modules. For example, you can take Introduction to Comparative Politics, Introduction to Political Economy and Political Theory, Global History and IR in your first year in Politics and IR as well as the same regional options in your second year and Conflicts, Rights and Justice, Politics of Gender & Culture and many other similar modules in both IR and Politics. The main difference is that in IR there is more scope to look at international perspectives.