One day after a car bombing killed a top Lebanese military leader, President George W. Bush said Thursday that interference by Syria and its allies "aimed at intimidating the Lebanese people" must stop. A car bombing on Wednesday killed Brig. Gen. Francois Hajj, a candidate to become head of the army who had led the three-month military campaign that crushed al-Qaida-inspired militants. There was no claim of responsibility and widespread speculation over the motive for the attack. Some blamed Islamic extremists, while others said Syria was behind it. However, Syria's foreign minister has condemned the bombing. Bush refrained from directly blaming Syria.