WASHINGTON

IN 2010, I was branded a member of the “Al Qaeda 7” — a notorious label attached to Department of Justice lawyers who were mocked by critics claiming they had “flocked to Guantánamo to take up the cause of the terrorists.” My crime: I advocated for the closure of the detention facility — a position that has also been taken up by the likes of former President George W. Bush, former Secretary of Defense Robert M. Gates and former Secretary of State Colin L. Powell — and for more humane living conditions for those imprisoned there.

At the time, I reacted defensively. I was indignant. I insisted on the legitimacy of my convictions. But even then the writing was on the wall. For a core group of detainees, closing Guantánamo would not mean release or prosecution, as most human rights and civil liberties groups have long advocated. Rather, it would mean relocation to the United States, or elsewhere, for continued detention.

Now, almost four years later, I have changed my mind. Despite recognizing the many policy imperatives in favor of closure, despite the bipartisan support for this position, and despite the fact that 166 men still languish there, I now believe that Guantánamo should stay open — at least for the short term.

While I have been slow to come to this realization, the signs have been evident for some time. Three years ago, Barack Obama’s administration conducted a comprehensive review of the Guantánamo detainees and concluded that about four dozen prisoners couldn’t be prosecuted, but were too dangerous to be transferred or released. They are still being held under rules of war that allow detention without charge for the duration of hostilities.