Similar to you. I'm finishing my second Master's (first one in Global Health, second in Political Science, my research is on peacebuilding). I have done internships (including in India during my master's, the rest is not as relevant, as I studied nutrition during my undergrad), have work experience as a research and teacher assistant (all related to IR and conflict/post-conflict), and I am the president of my local chapter of WIIS (Women in International Security)... At this point, I'm not even sure what I could bring more to the table for those internships (pretty sure I could get hired for a good job with my experience)... Wasn't even called back for an interview with the GENAD (Gender Advisor) office, while I got a random email today about the creation of a WPS researchers network in my country.
Even if they have a lot of candidates, I find it pretty disrespectful that they are not even respecting their deadlines, or changing them and keeping us updated. Anyway, good luck to you!