Six staff members of the United Nations were killed and another nine wounded in an armed attack on a central Kabul guesthouse this morning. The Taliban has claimed responsibility for the attack, saying it was the first step in a campaign to prevent the upcoming runoff in the nation's presidential election. This attack comes hard on the heels of yesterday's attacks that killed eight American troops in multiple bomb attacks in southern Afghanistan. The deaths make October the deadliest month for American troops there since the war began in 2001. We speak to BBC correspondent David Loyn, the author of "In Afghanistan: Two Hundred Years of British, Russian and American Occupation," about the state of the international effort in Afghanistan. We're also joined by New York Times White House correspondent Peter Baker, with an update on the president's decision on whether or not to send additional troops to the embattled nation.