I must admit I am quite ignorant about india and Pakistan. I know about the partition and religious differences. that's about it. a young woman is enlisted to spy for india by marrying a pakisani man. she loves her country above all else. so does he. I have never seen a film like this where there are no "bad" guys. you end up rooting for both sides. that's a really simple analysis, but this is complicated. you'll be on the edge of your seat worrying about the girl.
