Now that they are in office, President Donald Trump and his team must protect the nation from many threats – including from insiders. Insider threats could take many forms, such as the next Edward Snowden, who leaked hundreds of thousands of secret documents to the press, or the next Nidal Hasan, the Fort Hood mass killer.

Recently declassified documents reveal that in October 1969, President Richard Nixon ordered the U.S. military to go on nuclear alert. Nixon’s decision to test his “madman theory” was meant to signal to leaders in Moscow and Hanoi his willingness to do whatever was necessary to end the war in Vietnam.

The author examines Washington's "calculated ambiguity doctrine," which holds that the United States does not rule out the use of nuclear weapons in response to a chemical or biological weapons attack. The author argues that the risks associated with this doctrine outweigh the benefits.

"Can nuclear strategy and morality be compatible....[and] can initiating the use of nuclear weapons ever be morally justified?"" asks Harvard University's Nuclear Study Group in a Christian Science Monitor op-ed released.