keywords: lagos obasanjo abuja nigerian niger
text: Nigerian Oil Delta Rebel in 11th Hour Peace Talks  LAGOS (Reuters) - Nigerian rebel leader Mujahid  Dokubo-Asari said he arrived in the capital Abuja on Wednesday  for talks with President Olusegun Obasanjo after his group  threatened a new offensive against troops in the oil-producing  Niger delta and threatened to target oil workers.