Rivkin noted that John Walker Lindh, the Marin County teenager who went to Afghanistan and fought with the Taliban, got 20 years after he pleaded guilty in a federal civilian court.
White House spokesman Tony Fratto appeared to acknowledge that the partial setback for Hamdan's prosecutors amounted to a victory of sorts for the administration. Noting Hamdan's conviction on the "material support" charge, Fratto this week said: "The military commission system is a fair and appropriate legal process for prosecuting detainees alleged to have committed crimes against the United States or our interests. We look forward to other cases moving forward to trial."
Lawyers who have followed the Guantanamo cases say Hamdan's conviction sets the stage for the main act: the trial of Mohammed, the self-described mastermind of the Sept. 11 attacks.
Administration officials have long hoped that before President Bush leaves office, they can put Mohammed on trial and win a death sentence for him and four men accused as his confederates who are also held at Guantanamo.
But time is running short.
The man known in security parlance as KSM was captured in Pakistan in 2003 and pressed for information in a secret prison. In 2006 the administration moved him to Guantanamo, with the goal of trying him on capital charges.
That fall, the administration also pressed the outgoing Republican-controlled Congress to adopt the Military Commissions Act, the law empowering the tribunal to try terrorism suspects at Guantanamo. It had the effect of overturning a Supreme Court ruling in June, which had struck down a Pentagon system for handling terrorism cases.
The high court ruling came in the case of Hamdan vs. Bush. But Hamdan's victory only served to put him first in line when the reauthorized military trials got underway.
Next to be tried is Omar Khadr, a Canadian who was captured at age 15 and who faces charges of throwing a grenade that killed a U.S. soldier in Afghanistan in 2002. His trial is to begin Oct. 8.
The Mohammed trial, however, is likely to bring to the forefront the troubling issues of torture and harsh interrogations using the simulated-drowning technique known as waterboarding.
"If KSM is brought before a military commission, the entire focus of the world's attention will be on the problems and the unfairness of the system," said Daskal of Human Rights Watch. "Not on his crimes."
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david.savage@latimes.com