Jonathan Pollard, who spied for Israel in the 1980s and remains the only American ever sentenced to life in prison for spying for a U.S. ally, is eligible for parole in 2015. That means that if the U.S. released him early to keep Mideast peace talks moving, he would get out of prison just a year and a half before he could be released anyway. Caspar Weinberger, who was Pentagon chief when Pollard gave Israel thousands of classified documents, said he could "not conceive of a greater harm to national security" than Pollard's betrayal.