The Pentagon recently canceled a Defense Science Board study examining nuclear deterrence due to an upcoming review on the same issue, according to a Defense Department spokesman. "In light of the upcoming Nuclear Posture Review, and with congressional agreement, senior leadership in the Department of Defense canceled the DSB's nuclear deterrence summer study," spokesman Lt. Col. Roger Cabiness told Inside the Pentagon in a March 7 email. Then-Pentagon acquisition chief Frank Kendall called for the study in a November 2016...