KABKABIYA, Sudan (AP) - Former President Carter got in a shouting match Wednesday with Sudanese security services who blocked him from a town in Darfur where he was trying to meet with refugees from the ongoing conflict. The 83-year-old Carter walked into this highly volatile pro-Sudanese government town to meet refugees too frightened to attend a scheduled meeting at a nearby compound. He was able to make it to a school where he met with one tribal representative and was preparing to go further into the town when Sudanese security officers stopped him. "You can't go. It's not on the...