On Iraq the CIA itself was conflicted.  Bush White House toady George Tenant was blathering about a slam dunk case for invading Iraq and that is what his bosses wanted to hear (although they expected him to do a better job digging up evidence).

Former CIA agent with an undercover CIA wife, Joe Wilson, followed the Niger yellow cake being sold to Saddam story and declared it unequivocal junk.  Which it was.

Smart leaders listen to a LOT of information, they don't select just want they want to hear (Bush) or nothing at all (Trump).  Trump's not fit to lead the USA but, like most US Presidents of the  last 70 years, he will get a lot of "foreigners" killed in "foreign" lands.