“On Wednesday, 60 prominent Republican national security former officials and experts released an open letter calling Donald Trump a dangerous foreign policy naif who as president ‘would use the authority of his office to act in ways that make America less safe’ and pose ‘a distinct threat to civil liberty in the United States.’ Therefore, the signatories concluded, ‘as committed and loyal Republicans, we are unable to support a party ticket with Mr. Trump at its head. We commit ourselves to working energetically to prevent the election of someone so utterly unfitted to the office.'”
Source: GOP national security leaders sign letter vowing to actively oppose Donald Trump