WASHINGTON - Pakistani authorities have captured a man accused of playing a leading role in the Sept. 11 attacks and the bombing of an American warship in Yemen, a catch President Bush called a "major, significant find" in the war against the ailing al-Qaida network. Waleed bin Attash, also known as Tawfiq Attash or just Khallad, coordinated the activities of at least two of the hijackers who crashed into the Pentagon during the Sept. 11 attacks, U.S. counterterrorism officials said. He is also one of two figures described as masterminds of the bombing of the U.S. Navy destroyer on Oct....