It [terrorism] happened because intelligence, leadership and police failures made it possible.

We are organized by territories, whereas terrorists are organized into networks. States are very slow and terrorists are extremely fast. Intelligence sharing needs to expand beyond the regional and become global and not country-focused. We need to acquire speed and agility.

The economy is the silent elephant in the room.

We [Afghanistan] are constantly dealing with situations in which we must ensure that provinces or major cities do not fall into enemy hands. People need to understand that we don't have an air force and the forces that we do have used to get air support from NATO, which is no longer available. Our pilots have done wonders, but they are stretched thin. We are dealing with resources that have been spread thin.

We [Afghanistan government] were in the process of cleaning up the government when these attacks happened in the north - not only in Kunduz, but also in other provinces. Our special forces are limited - we cannot be everywhere at the same time and we had to defend every district regardless of how insignificant it might be, because of the very social and political makeup of this country.

Crisis for others is a source of despair. For me, it's an opportunity to bring reform. I owe this country a debt I cannot repay.

I don't want anything for myself. I want everything for Afghan. I worked pro bono for 13 years. I didn't hesitate for one moment after 9/11 to resign from my position of comfort at the World Bank in New York and to come and serve.