Republican security experts rail against Trump in open letter - BBC
The group, which includes the former CIA director Michael Hayden, said Donald Trump 'lacks the character, values and experience' to be president, Ukraine Today reports.
Many of the signatories had declined to sign a similar note in March.
In response, Mr Trump said they were part of a 'failed Washington elite' looking to hold on to power.
The open letter comes after a number of high-profile Republicans stepped forward to disown the property tycoon. Mr Trump has broken with years of Republican foreign policy on a number of occasions.
As reported earlier by 1492news.com, Billionaire Seth Klarman: 'I will work to get Hillary Clinton elected president of the United States'