U.S. SET TO WIDEN FINANCIAL ASSAULT
Bush administration widens financial assault on Osama bin Laden; prepares to freeze assets of about two dozen more charities and other organizations suspected of providing money and support to his terrorist operations; officials tracking bin Laden's Al Qaeda network report finding sophisticated financial infrastructure that stretches from United Arab Emirates to Europe to Indonesia, and uses mechanisms as varied as charitable organizations, manufacturing companies and credit card fraud to raise money and move it around globe; say one focus of efforts is Mustafa Ahmad, who allegedly helped finance September 11 attacks and is believed to play broader role in finances of Al Qaeda network; evidence linking him to hijacking suspects days before attacks discussed; new list of suspect organizations under review by federal government includes charities in Saudi Arabia and Chicago, Arab bank and at least three informal money-lending networks common in Arab world (M)
