A company in the United Arab Emirates is poised to take over significant operations at six American ports as part of a corporate sale, leaving a country with ties to the Sept. 11 hijackers with influence over a maritime industry considered vulnerable to terrorism. The Bush administration considers the UAE an important ally in the fight against terrorism since the suicide hijackings and is not objecting to Dubai Ports World's purchase of London-based Peninsular and Oriental Steam Navigation Co. The $6.8 billion sale is expected to be approved Monday. The British company is the fourth largest ports company in the...