U.S. Secretly Aids Pakistan in Guarding Nuclear Arms

By DAVID E. SANGER and WILLIAM J. BROAD

WASHINGTON, Nov. 17 — Over the past six years, the Bush administration has spent almost $100 million on a highly classified program to help Gen. Pervez Musharraf, Pakistan’s president, secure his country’s nuclear weapons, according to current and former senior administration officials.

But with the future of that country’s leadership in doubt, debate is intensifying about whether Washington has done enough to help protect the warheads and laboratories, and whether Pakistan’s reluctance to reveal critical details about its arsenal has undercut the effectiveness of the continuing security effort.