John Brennan, top U.S. counterterrorism adviser, to visit Libya TRIPOLI, Libya - White House counterterrorism adviser John O. Brennan will visit Tripoli on Tuesday for meetings with top Libyan interior and foreign ministry officials, as well as a one-on-one meeting with President Mohamed Yusuf al-Magariaf, a Libyan official said Monday. The announcement was made by Brig. Abdel Moneim al-Tunsi, a top Interior Ministry official. Brennan's trip is aimed at giving a high-level kick to a slow-moving investigation into the Sept. 11 attack that killed U.S. Ambassador J. Christopher Stevens and three other Americans at a U.S. diplomatic post in Benghazi. Libya's political chaos has made quick cooperation difficult, with an American team of investigators in Tripoli waiting on Libyan permission to operate freely in Benghazi. Libya's prime minister-elect lost a confidence vote by an overwhelming margin Sunday, removing him from office, and it could be weeks or months before the country has a permanent democratically elected government in place. An FBI team visited Benghazi on Thursday for the first time since the attack almost four weeks ago. But as time passes, physical evidence at the poorly secured scene is deteriorating, and the culprits may have had time to go into hiding or escape the country, officials fear. Libyan Prime Minister-elect Mustafa Abushagur lost Sunday's confidence vote, with 125 members of the 200-member Libyan General National Congress voting against him, 44 in favor and the remainder abstentions or no-shows. Abushagur came under heavy fire last week for proposing a cabinet that critics said was filled with political unknowns. Following the protests, he came up with a new slate but lost the vote. Now Libya's legislature must select a new prime minister, who will have to assemble another cabinet. Abushagur, a longtime engineering professor in the United States, had been Libya's first democratically chosen prime minister since Sept.