The Taliban has claimed responsibility for Sunday's multiple attacks in the Afghan capital Kabul. U.S. officials are praising Afghan forces, but questions remain about how the insurgents were able to infiltrate the most secure parts of the capital.

The bulk of the U.S. military force in Afghanistan is slated to leave the country by 2014. But the Pentagon is willing to keep some Americans there to train Afghan forces, according to a report by NPR's Tom Bowman.

Pie-in-the-sky reports about vast mineral deposits of copper, iron, uranium and lithium are believed by many in Afghanistan to be the key to the country's future. But a Chinese copper mine east of Kabul is the only one optioned by an international company so far, and it's on hold.

Growing awareness about PTSD has had a downside, namely that civilians now assume veterans are likely to have psychological issues. Yet while in the military, many say they feel pressure to hide their problems. The recent mass shooting in Afghanistan has fueled misconceptions and further complicated efforts to treat PTSD.