You may consider writing on security, development and the geopolitics of East Asia or on the terrorism, counter-terrorism and political violence in the middle east. Other options could be peace processes, peacebuilding and the new Arab- Israel relations.
Go by the dynamics of Afghanistan after the Doha Peace talks between Taliban and USA. You can research the new areas of engagement which might emerge after US pull out from the region and the increasing foot-prints of China in Afghanistan. Of Course, Pakistan dimension is there by default.
Research the amount financial aid that each nation-state in Africa, the Middle East and Latin America, and Asia have received since 1948. Then research how they money has NOT been applied based on each nation's proposal to the financial institutions. There is a problem - why are there so many poor people living in slums, shanties, without proper housing and bathroom facilities, while each of these nations have UN Representatives that are housed in fancy apartments in Manhattan and their own nation? Why is there a huge gap between the rich and the poor in African Nations? The Solution: Democratic Governments, Re-structure Government Agencies that will be filled ONLY by HONEST men and women.