The body of Bonnie Witheral, an American nurse who was shot dead by an unknown gunman at a clinic in Sidon AMERICANS came under attack across the Middle East yesterday, prompting fears of a new wave of terrorist strikes at vulnerable Western targets in the Arab world. An American nurse was killed by a gunman in Lebanon. Two US soldiers were shot and injured in Kuwait by a fugitive policeman. In Saudi Arabia a gunman burst into a McDonald’s restaurant and set it alight. US officials are investigating whether the incidents were isolated attacks or part of a coordinated campaign....