U.S. Charges First Two 9/11 Detainees

As the Post reports, "the U.S. government announced today that it is mounting its first prosecution of enemy prisoners since the aftermath of World War II, charging two detainees at the Guantanamo Bay prison who were alleged bodyguards for Osama bin Laden, before a military tribunal with conspiracy to commit war crimes. "

But why did it take two years? Can it be that the intention was always to delay the trials until the start of political campaigning? Is that why hundreds of Guantanamo Bay prisoners have been left to rot for two years? Is there any other explanation being offered?