SAN FRANCISCO — New Attorney General Eric Holder has authorized a deal that could abruptly end a rare San Francisco death penalty trial only days after it began.

Not only does Holder’s reversal likely spare defendant Emile Fort his life, but it may signal a less aggressive approach to the death penalty in federal court. And it vindicates the local U.S. attorney’s office: Months ago federal prosecutors in San Francisco had recommended a 40-year plea bargain for Fort to their higher-ups in Washington — only to be rebuffed by Holder’s predecessor, Michael Mukasey.