According to the authors, the CIA (at the White House's insistence) required the following Op/Ed piece to be heavily redacted. A sample:
In December 2001, xxxxxx xxxxxxx xxxxxxxxxxxxxx xxxxxxxxx xxxxxxxxx x Tehran to keep Gulbuddin Hekmatyar, the brutal pro-Al Qaeda warlord, from returning to Afghanistan to lead jihadist resistance there. xxxxx xxxxxxx so long as the Bush administration did not criticize it for harboring terrorists. But, in his January 2002 State of the Union address, President Bush did just that in labeling Iran part of the “axis of evil.” Unsurprisingly, Mr. Hekmatyar managed to leave Iran in short order after the speech. xxx xxxxxxxx xxxxxx xxxxxx xxxxxx xxxxx xxxxx xxxxx xxxx xxxxx xxxxx xxxxx xxxxx xxxx xxxx xxxx xxx the Islamic Republic could not be seen to be harboring terrorists.
The authors' explanation is here. Eventually -- and perhaps, soon -- we'll know what was redacted. Then we can all judge whether the White House was trying to protect us from harm, or protect themselves from criticism.