"Clearly, the Russia situation is much more of a direct confrontational situation," he said. "The gloves are off."
Administration plan sees deterrence in new nuclear firepower →
"They have done crazy things and tend to carry through with what they have said," Kristensen said in an email exchange. "But a live nuclear weapons launch and detonation in the Pacific would be an extraordinarily irresponsible act."
Does NKorean H-bomb threat push US closer to war? →