In an exclusive interview with Margaret Warner, Afghan President Hamid Karzai acknowledges there is corruption at different levels of government, but says the country is working to address it and that the international community must respect the decisions of the Afghan courts.

Watch the full interview on Monday's NewsHour.

Newsmaker: Abdullah Calls for Legitimacy in Afghan Government

MP3: Afghans Seek Changes in Next Karzai Term

Despite the Taliban's campaign of violence targeting the elections, Afghanistan held its second-ever presidential vote on Aug. 20. USIP's Alex Thier explains the significance.

Special correspondent Nima Elbagir reports from a hospital in Kandahar, in the south of Afghanistan, on the toll that war has taken on the nation's civilian population.

Author and former ABC news producer Gretchen Peters talks about her book about the drug trade in Afghanistan and Pakistan and how it is fueling the insurgency.