ABC’s Diane Sawyer is in Afghanistan where she met up with Secy. of Defense Robert Gates as he continues is global farewell tour. Sawyer appeared on “This Week” this morning and will report for “World News” tonight and tomorrow night. This is Sawyer’s sixth trip to Afghanistan; she last reported from there in January 2010. Sawyer will conduct a joint interview with Secy. Gates and General David Petraeus, the outgoing commander of the International Security Assistance Force in Afghanistan (ISAF). Gates will be replaced at the Pentagon by CIA chief Leon Panetta; while Petraues is expected to leave military duty later this year and take over at CIA. Both appointments need Congressional approval.