The New York Times reports: Fifty of the nation’s most senior Republican national security officials, many of them former top aides or cabinet members for President George W. Bush, have signed a letter declaring that Donald J. Trump “lacks the character, values and experience” to be president and “would put at risk our country’s national security and well-being.”

Mr. Trump, the officials warn, “would be the most reckless president in American history.”

The letter says Mr. Trump would weaken the United States’ moral authority and questions his knowledge of and belief in the Constitution. It says he has “demonstrated repeatedly that he has little understanding” of the nation’s “vital national interests, its complex diplomatic challenges, its indispensable alliances and the democratic values” on which American policy should be based. And it laments that “Mr. Trump has shown no interest in educating himself.”

“None of us will vote for Donald Trump,” the letter states, though it notes later that many Americans “have doubts about Hillary Clinton, as do many of us.”

Among the most prominent signatories are Michael V. Hayden, a former director of both the C.I.A. and the National Security Agency; John D. Negroponte, who served as the first director of national intelligence and then deputy secretary of state; and Robert B. Zoellick, another former deputy secretary of state, United States trade representive and, until 2012, president of the World Bank. Two former secretaries of homeland security, Tom Ridge and Michael Chertoff, also signed, as did Eric S. Edelman, who served as Vice President Dick Cheney’s national security adviser and as a top aide to Robert M. Gates when he was secretary of defense. [Continue reading…]