A group of 75 former career U.S. ambassadors and senior State Department officials have released a letter vowing not to vote for Republican presidential nominee Donald Trump, blasting him as "entirely unqualified" to serve as commander-in-chief.
The letter released Thursday notes that its signatories — with hundreds of years of combined service — have served under both Democratic and Republican presidents and have represented the United States in 52 countries and international organizations.
All have endorsed Trump's Democratic rival, Hillary Clinton.