SANAA, Yemen (AP) — Yemeni medical officials say at least 33 people have been killed in government raids in a restive tribal area northeast of the capital Sanaa.The heavily armed tribes of the Arhab region have clashed regularly with security forces throughout the six-month popular uprising seeking to oust President Ali Abdullah Saleh.Eyewitness Kamal Salami says government forces in tanks and armored vehicles tried to raid a number of Arhab villages starting Monday but tribal fighters fought them off.Read More... More on Middle East Protests