Pakistan is a pretty screwed up country in a great many ways, and much of their problems are due to Islam having such a central role in the identify of the country. I think they have the capacity to get past their problems but they have as difficult a problem ahead of them as does Iraq, Syria, or Lebanon.

On a meta-level it's fascinating how the vast majority of countries in the world still tend to be mono-ethnic "nation states". Even in the most westernized parts of Europe there are overarching tendencies for nations to fly apart into their component sub-ethnicities rather than to stick together based on belief in common values. Look at Britain and the ongoing discontent of Wales and Scottland, let alone Northern Ireland. Or Belgium threatening to split into two countries. Or the Basques in Spain. Or the history of Czechoslovakia, the USSR, Yugoslavia, etc.