a declassified White House report says. ... The lack of flight activity or missile launches also leads us to conclude that the regime used rockets in the attack. The White House released a map, but no satellite images. The report also cites multiple streams of intelligence, without giving specifics. ` Intercepted communications ' In the three days prior to the attack, we collected streams of human, signals and geospatial intelligence that reveal regime activities that we assess were associated with preparations for a chemical weapons attack, the U.S. report says. Syrian chemical weapons personnel were operating in the Damascus suburb of Adra... near an area that the regime uses to mix chemical weapons, including sarin. On August 21, a Syrian regime element prepared for a chemical weapons attack in the Damascus area, including through the utilization of gas masks. We have a body of information, including past Syrian practice, that leads us to conclude that regime officials were witting of and directed the attack, the report says. ... We intercepted communications involving a senior official intimately familiar with the offensive who confirmed that chemical weapons were used by the regime on August 21 and was concerned with the U.N. inspectors obtaining evidence. Intelligence shows Syrian chemical weapons personnel were told to cease operations in the afternoon of August