CIA director says China is #1 priority, poses biggest challenge from adversary in US history

CIA Director John Ratcliffe declared in an internal memo that China is the top priority for his agency, warning that "no adversary in the history of our Nation has presented a more formidable challenge or a more capable strategic competitor than the Chinese Communist Party." 

The internal CIA memo directed to the agency’s rank and file was provided to Fox News by a senior CIA official on Thursday.  

"For CIA to continue successfully defending our Nation, we will build upon our strong...