The latest clashes between Yemeni government forces and al-Qaida-linked militants in southern Yemen have killed 14, including 12 militants.Loud explosions and exchanges of fire were heard in the capital Sanaa last night, in the neighborhood where the chief of the main tribe opposing Yemen's president lives.There were no immediate reports of casualties. Three explosions were also reported near police stations and an intelligence office in the port city of Aden in southern Yemen.A military official yesterday said that negotiations in the south with the fighters to end the bloodshed there were deadlocked.Ali Abdullah Saleh, Yemen's leader of nearly 33 years, has held onto power in the face of massive protests demanding his ouster since February. He insists that if he leaves, al-Qaida will take over the country.