That's not to say it is impossible to work in Afghanistan. The problem is one of delivering enough aid into the hands of those who need it most.

Many people deeper inside of Afghanistan simply cannot get out. They are trapped where they are. They are the most vulnerable and face the greatest risks under the present circumstances. They suffer from hunger, but they also suffer from fear and from exposure, and in some areas they face a breakdown of law and order.

Some of these families have coped for as long as they can. Now, they are simply at the end of their rope.

Everything is like the rivers: the work of the slopes.

It ain't going to be done until we're in the top three. So we've got some work to do.

It's very frustrating especially because we work really hard during the week,