I think studying the impact of international financing sources on poverty or financial sustainability in developing countries are the currently interesting research topics in the field of international finance.
A new topic in international finance and crisis is the impact of digital currencies and blockchain technology on global financial stability. With the rise of cryptocurrencies and central bank digital currencies (CBDCs), there are growing concerns and opportunities related to financial regulation, monetary policy, cross-border payments, and the potential for digital assets to either stabilize or destabilize global markets during financial crises. The integration of these technologies into the financial system is reshaping how crises might be managed and the role of traditional financial institutions.