Katie Couric's Notebook: Afghanistan

Last July, a similar attack killed nine in an area just 20 miles from this one - in a village called Wanat.

Some say this latest incident is proof - the strategy in Afghanistan needs to change. The American commander there, General Stanley McChrystal, wants to move troops away from remote areas to focus on protecting civilians in towns and cities.

As the war reaches its eighth anniversary, and a critical impasse, that is just one ongoing debate.

For the next three nights, we're devoting the bulk of our broadcast to Afghanistan - to help you better understand the situation there.

It was once considered the right war, but many feel it's going wrong. And if it is still worth fighting - how should the strategy change?

These decisions cost valuable time and money - but most importantly, they cost us lives - and the situation deserves our attention.

That's a page from my notebook.

I'm Katie Couric, CBS News.