Zelizer : President Obama must answer basic questions to sell U.S. move to the public . War-weary American want to know why Syria should intervene , he says . It was `` like grandma 's nightshirt , it covered everything , '' he later said . Julian Zelizer : Obama needs to explain reliability of intelligence , outline the aims of the mission .
Zelizer : President Obama must answer basic questions to sell U.S. move to the public . War-weary American want to know why Syria should intervene , he says . Julian Zelizer : Obama needs to explain reliability of intelligence , outline the aims of the mission .