The area the kidnapping took place suggests the kidnapping of Pfc. Bowe Bergdahl is most likely the work of the Haqqani network, an Al Qaeda-linked group, analysts say.
Top contenders Abdullah Abdullah and Ashraf Ghani are campaigning outside their traditional bases and attacking the incumbent.
As forces of the 10th Mountain Division have poured into Wardak Province to combat the Taliban, they've also had to battle a cool reception.
Afghanistan hopes to gain control of more of its territory before August elections. The Taliban could disrupt voter turnout in areas it holds.
About 4,000 soldiers are flooding into the southern Taliban stronghold of Helmand Province in the first test of new US strategy.
As race for presidency nears, a new role is eyed for a former US ambassador Zalmay Khalilzad: Help Kabul work with the outside world.
A federal judge orders release of a Syrian national who Al Qaeda suspected was a US spy.
The team working to free the New York Times reporter reached out to kidnappers and debated whether to go public.