Obama's nuclear naivete in dealing with Russia

Time:

...
... Over the course of Obama’s presidency, Russia has managed to negotiate deep cuts to the U.S. arsenal while substantially strengthening of its own. It has allegedly violated the treaty that limits the deployment of nuclear weapons in Europe and, in the last few years, it has brought disarmament talks with the U.S. to a complete standstill for the first time since the 1960s. In its rhetoric, Moscow has also returned to a habit of nuclear threats, while in its military exercises, it has begun to practice for a nuclear strike, according to the NATO military alliance.

But of all these stark reversions to the posture of the Cold War, nothing expressed Russia’s position on nuclear disarmament more clearly than Putin’s decision to skip the nuclear summit in Washington last week. Apart from North Korea, which was not invited to the talks, Russia was the only nuclear power not to send a senior delegate.
...

Obama likes to talk about existential threats, except when it comes to the Russian nuclear program which he is blithely ignoring in large part while reducing the US ability to respond to the threat.  He is putting the US at grave risk and does not seem to care.