Reddit reviews Triangulating Peace: Democracy, Interdependence, and International Organizations (The Norton Series in World Politics)

I'm sympathetic to critiques of the democratic peace but its crassly dismissive to call it an over-simplified view of IR. The comparison with non-democratic countries is irrelevant because that's not what the theory is for and totally misconstrues the approach. What's more is that a considerable amount of social scientific effort in coding goes into what counts as a democratic state. You can be critical of using something like Polity IV, but the findings remain consistent even when you use alternative indexes. Russett and Oneal's book provides a good overview of the claims. Part of the reason their book won ISA Book of the Decade is because of the rigour of their arguments and their focus on methodology.

Lastly, research in the democratic peace has gone off in some interesting directions. See Hayes for an interesting historical and contemporary review.

>But i personally feel that India should not invite Pakistan after mumbai attack.

This is the accepted opinion. But the accepted opinion is a bit problematic because it suggests isolation is a solution, not an issue. Isolation reinforces divisions. Looking long-term, and not as a temporary fix, these two countries will get along better if two things happen together: if they develop stronger social and economic ties.

Cricket as a goodwill gesture between these two sides would emphasize overlaps in language, culture, food, and perspective in addition to wonderful cricket. That's a message worth repeating, because you don't bomb people if you share kinship. It's easier to isolate than establish ties but history shows only the latter leads to sustainable peace. That's the social side.

There's also the economic side - if the two countries are selling to each other in large quantities, they wouldn't want to bomb their own companies' markets or factories. It would also help economic growth in both countries.

I'm not just saying this in vague terms - research suggests this has been the case. This is a good read if you're interested.

More generally, South Asia's powerful - it just needs to get its shit together as a bloc.